1051811660 has 12 divisors (see below), whose sum is σ = 2208804528. Its totient is φ = 420724656.

The previous prime is 1051811653. The next prime is 1051811669. The reversal of 1051811660 is 661181501.

It is a super-2 number, since 2×1051811660² = 2212615536223911200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051811669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26295272 + ... + 26295311.

It is an arithmetic number, because the mean of its divisors is an integer number (184067044).

Almost surely, 2^1051811660 is an apocalyptic number.

1051811660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051811660 is an abundant number, since it is smaller than the sum of its proper divisors (1156992868).

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

1051811660 is a wasteful number, since it uses less digits than its factorization.

1051811660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52590592 (or 52590590 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 1051811660 is about 32431.6459650139. The cubic root of 1051811660 is about 1016.9805811366.

The spelling of 1051811660 in words is "one billion, fifty-one million, eight hundred eleven thousand, six hundred sixty".