1465256140 has 24 divisors (see below), whose sum is σ = 3077841312. Its totient is φ = 585949440.

The previous prime is 1465256113. The next prime is 1465256159. The reversal of 1465256140 is 416525641.

It is a junction number, because it is equal to n+sod(n) for n = 1465256096 and 1465256105.

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, 99025 + ... + 112855.

It is an arithmetic number, because the mean of its divisors is an integer number (128243388).

Almost surely, 2^1465256140 is an apocalyptic number.

1465256140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1465256140 is an abundant number, since it is smaller than the sum of its proper divisors (1612585172).

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

1465256140 is a wasteful number, since it uses less digits than its factorization.

1465256140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19137 (or 19135 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1465256140 is about 38278.6642922660. The cubic root of 1465256140 is about 1135.8069365007.

The spelling of 1465256140 in words is "one billion, four hundred sixty-five million, two hundred fifty-six thousand, one hundred forty".