1825978770 has 96 divisors (see below), whose sum is σ = 5919039360. Its totient is φ = 379422720.

The previous prime is 1825978757. The next prime is 1825978783. The reversal of 1825978770 is 778795281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1825978757) and next prime (1825978783).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124815 + ... + 138674.

It is an arithmetic number, because the mean of its divisors is an integer number (61656660).

Almost surely, 2^1825978770 is an apocalyptic number.

1825978770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1825978770 is an abundant number, since it is smaller than the sum of its proper divisors (4093060590).

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

1825978770 is a wasteful number, since it uses less digits than its factorization.

1825978770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263520 (or 263517 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 54.

The square root of 1825978770 is about 42731.4728274138. The cubic root of 1825978770 is about 1222.2646215258.

The spelling of 1825978770 in words is "one billion, eight hundred twenty-five million, nine hundred seventy-eight thousand, seven hundred seventy".