1963500378 has 64 divisors (see below), whose sum is σ = 4572288000. Its totient is φ = 550560384.

The previous prime is 1963500377. The next prime is 1963500389. The reversal of 1963500378 is 8730053691.

It is a super-2 number, since 2×1963500378² = 7710667468812285768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1963500377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517693 + ... + 521471.

It is an arithmetic number, because the mean of its divisors is an integer number (71442000).

Almost surely, 2^1963500378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1963500378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144000).

1963500378 is an abundant number, since it is smaller than the sum of its proper divisors (2608787622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1963500378 is a wasteful number, since it uses less digits than its factorization.

1963500378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1963500378 is about 44311.4023474771. The cubic root of 1963500378 is about 1252.2095061383.

The spelling of 1963500378 in words is "one billion, nine hundred sixty-three million, five hundred thousand, three hundred seventy-eight".