1913512028 has 12 divisors (see below), whose sum is σ = 3352983480. Its totient is φ = 955516752.

The previous prime is 1913512001. The next prime is 1913512031. The reversal of 1913512028 is 8202153191.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1913511985 and 1913512003.

It is a congruent number.

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, 306338 + ... + 312521.

It is an arithmetic number, because the mean of its divisors is an integer number (279415290).

Almost surely, 2^1913512028 is an apocalyptic number.

It is an amenable number.

1913512028 is a deficient number, since it is larger than the sum of its proper divisors (1439471452).

1913512028 is a wasteful number, since it uses less digits than its factorization.

1913512028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619636 (or 619634 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1913512028 is about 43743.7084390430. The cubic root of 1913512028 is about 1241.4914476791.

The spelling of 1913512028 in words is "one billion, nine hundred thirteen million, five hundred twelve thousand, twenty-eight".