1919690425 has 24 divisors (see below), whose sum is σ = 2450240000. Its totient is φ = 1490892480.

The previous prime is 1919690411. The next prime is 1919690447. The reversal of 1919690425 is 5240969191.

It is a happy number.

It is not a de Polignac number, because 1919690425 - 2⁹ = 1919689913 is a prime.

It is a super-2 number, since 2×1919690425² = 7370422655673361250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459496 + ... + 463654.

Almost surely, 2^1919690425 is an apocalyptic number.

It is an amenable number.

1919690425 is a deficient number, since it is larger than the sum of its proper divisors (530549575).

1919690425 is a wasteful number, since it uses less digits than its factorization.

1919690425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705 (or 4700 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 1919690425 is about 43814.2719327846. The cubic root of 1919690425 is about 1242.8261986866.

The spelling of 1919690425 in words is "one billion, nine hundred nineteen million, six hundred ninety thousand, four hundred twenty-five".