1165302540 has 36 divisors (see below), whose sum is σ = 3534751584. Its totient is φ = 310747296.

The previous prime is 1165302539. The next prime is 1165302559. The reversal of 1165302540 is 452035611.

1165302540 is a `hidden beast` number, since 1 + 1 + 653 + 0 + 2 + 5 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3236772 + ... + 3237131.

It is an arithmetic number, because the mean of its divisors is an integer number (98187544).

Almost surely, 2^1165302540 is an apocalyptic number.

1165302540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165302540 is an abundant number, since it is smaller than the sum of its proper divisors (2369449044).

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

1165302540 is a wasteful number, since it uses less digits than its factorization.

1165302540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473918 (or 6473913 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1165302540 is about 34136.5279429528. The cubic root of 1165302540 is about 1052.3161388971.

The spelling of 1165302540 in words is "one billion, one hundred sixty-five million, three hundred two thousand, five hundred forty".