1011020378 has 4 divisors (see below), whose sum is σ = 1516530570. Its totient is φ = 505510188.

The previous prime is 1011020371. The next prime is 1011020383. The reversal of 1011020378 is 8730201101.

It is a happy number.

1011020378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8730201101 = 13877 ⋅629113.

It can be written as a sum of positive squares in only one way, i.e., 893232769 + 117787609 = 29887^2 + 10853^2 .

It is not an unprimeable number, because it can be changed into a prime (1011020371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252755093 + ... + 252755096.

Almost surely, 2^1011020378 is an apocalyptic number.

1011020378 is a deficient number, since it is larger than the sum of its proper divisors (505510192).

1011020378 is an equidigital number, since it uses as much as digits as its factorization.

1011020378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505510191.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 1011020378 is about 31796.5466363880. The cubic root of 1011020378 is about 1003.6600470457.

Adding to 1011020378 its reverse (8730201101), we get a palindrome (9741221479).

The spelling of 1011020378 in words is "one billion, eleven million, twenty thousand, three hundred seventy-eight".