1165253650 has 24 divisors (see below), whose sum is σ = 2364406704. Its totient is φ = 423728400.

The previous prime is 1165253597. The next prime is 1165253671. The reversal of 1165253650 is 563525611.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1058772 + ... + 1059871.

It is an arithmetic number, because the mean of its divisors is an integer number (98516946).

Almost surely, 2^1165253650 is an apocalyptic number.

1165253650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1165253650 is an abundant number, since it is smaller than the sum of its proper divisors (1199153054).

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

1165253650 is a wasteful number, since it uses less digits than its factorization.

1165253650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118666 (or 2118661 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 1165253650 is about 34135.8118403532. The cubic root of 1165253650 is about 1052.3014221307.

The spelling of 1165253650 in words is "one billion, one hundred sixty-five million, two hundred fifty-three thousand, six hundred fifty".