1925733690 has 112 divisors (see below), whose sum is σ = 5376904200. Its totient is φ = 495766656.

The previous prime is 1925733659. The next prime is 1925733703. The reversal of 1925733690 is 963375291.

1925733690 is a `hidden beast` number, since 19 + 2 + 573 + 3 + 69 + 0 = 666.

1925733690 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1177656489 + 748077201 = 34317^2 + 27351^2 .

It is a super-2 number, since 2×1925733690² = 7416900489602032200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 206856 + ... + 215964.

Almost surely, 2^1925733690 is an apocalyptic number.

1925733690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1925733690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2688452100).

1925733690 is an abundant number, since it is smaller than the sum of its proper divisors (3451170510).

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

1925733690 is an equidigital number, since it uses as much as digits as its factorization.

1925733690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9163 (or 9148 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 1925733690 is about 43883.1823139571. The cubic root of 1925733690 is about 1244.1289886858.

The spelling of 1925733690 in words is "one billion, nine hundred twenty-five million, seven hundred thirty-three thousand, six hundred ninety".