1165862120 has 16 divisors (see below), whose sum is σ = 2623189860. Its totient is φ = 466344832.

The previous prime is 1165862107. The next prime is 1165862153. The reversal of 1165862120 is 212685611.

It can be written as a sum of positive squares in 2 ways, for example, as 1153145764 + 12716356 = 33958^2 + 3566^2 .

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, 14573237 + ... + 14573316.

Almost surely, 2^1165862120 is an apocalyptic number.

1165862120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165862120 is an abundant number, since it is smaller than the sum of its proper divisors (1457327740).

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

1165862120 is a wasteful number, since it uses less digits than its factorization.

1165862120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29146564 (or 29146560 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1165862120 is about 34144.7231647878. The cubic root of 1165862120 is about 1052.4845531968.

The spelling of 1165862120 in words is "one billion, one hundred sixty-five million, eight hundred sixty-two thousand, one hundred twenty".