1901992804 has 12 divisors (see below), whose sum is σ = 3399306624. Its totient is φ = 930762344.

The previous prime is 1901992789. The next prime is 1901992819. The reversal of 1901992804 is 4082991091.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1901992789) and next prime (1901992819).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5058304 + ... + 5058679.

It is an arithmetic number, because the mean of its divisors is an integer number (283275552).

Almost surely, 2^1901992804 is an apocalyptic number.

It is an amenable number.

1901992804 is a deficient number, since it is larger than the sum of its proper divisors (1497313820).

1901992804 is a wasteful number, since it uses less digits than its factorization.

1901992804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10117034 (or 10117032 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1901992804 is about 43611.8424742638. The cubic root of 1901992804 is about 1238.9951979712.

The spelling of 1901992804 in words is "one billion, nine hundred one million, nine hundred ninety-two thousand, eight hundred four".