1121564810 has 16 divisors (see below), whose sum is σ = 2083940352. Its totient is φ = 434154000.

The previous prime is 1121564789. The next prime is 1121564887. The reversal of 1121564810 is 184651211.

It is a super-2 number, since 2×1121564810² = 2515815246060672200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808666 + ... + 1809285.

It is an arithmetic number, because the mean of its divisors is an integer number (130246272).

Almost surely, 2^1121564810 is an apocalyptic number.

1121564810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121564810 is a deficient number, since it is larger than the sum of its proper divisors (962375542).

1121564810 is a wasteful number, since it uses less digits than its factorization.

1121564810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617989.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1121564810 is about 33489.7717221244. The cubic root of 1121564810 is about 1038.9822421293.

The spelling of 1121564810 in words is "one billion, one hundred twenty-one million, five hundred sixty-four thousand, eight hundred ten".