1891935264 has 24 divisors (see below), whose sum is σ = 4966330320. Its totient is φ = 630645056.

The previous prime is 1891935259. The next prime is 1891935277. The reversal of 1891935264 is 4625391981.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 9853734 + ... + 9853925.

It is an arithmetic number, because the mean of its divisors is an integer number (206930430).

Almost surely, 2^1891935264 is an apocalyptic number.

It is an amenable number.

1891935264 is an abundant number, since it is smaller than the sum of its proper divisors (3074395056).

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

1891935264 is a wasteful number, since it uses less digits than its factorization.

1891935264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19707672 (or 19707664 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 1891935264 is about 43496.3821943849. The cubic root of 1891935264 is about 1236.8074446706.

The spelling of 1891935264 in words is "one billion, eight hundred ninety-one million, nine hundred thirty-five thousand, two hundred sixty-four".