1916637456 has 80 divisors (see below), whose sum is σ = 5010790400. Its totient is φ = 631255680.

The previous prime is 1916637439. The next prime is 1916637467. The reversal of 1916637456 is 6547366191.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1556361 + ... + 1557591.

It is an arithmetic number, because the mean of its divisors is an integer number (62634880).

Almost surely, 2^1916637456 is an apocalyptic number.

1916637456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1916637456 is an abundant number, since it is smaller than the sum of its proper divisors (3094152944).

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

1916637456 is a wasteful number, since it uses less digits than its factorization.

1916637456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1598 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The square root of 1916637456 is about 43779.4181779521. The cubic root of 1916637456 is about 1242.1670085369.

The spelling of 1916637456 in words is "one billion, nine hundred sixteen million, six hundred thirty-seven thousand, four hundred fifty-six".