1164601251 has 24 divisors (see below), whose sum is σ = 1914921216. Its totient is φ = 675129840.

The previous prime is 1164601247. The next prime is 1164601253. The reversal of 1164601251 is 1521064611.

1164601251 is a `hidden beast` number, since 1 + 1 + 6 + 4 + 601 + 2 + 51 = 666.

It is not a de Polignac number, because 1164601251 - 2² = 1164601247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1164601253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253455 + ... + 258008.

It is an arithmetic number, because the mean of its divisors is an integer number (79788384).

Almost surely, 2^1164601251 is an apocalyptic number.

1164601251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1164601251 is a deficient number, since it is larger than the sum of its proper divisors (750319965).

1164601251 is a wasteful number, since it uses less digits than its factorization.

1164601251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511503 (or 511500 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1164601251 is about 34126.2545703451. The cubic root of 1164601251 is about 1052.1049989291.

Adding to 1164601251 its reverse (1521064611), we get a palindrome (2685665862).

It can be divided in two parts, 116460 and 1251, that added together give a palindrome (117711).

The spelling of 1164601251 in words is "one billion, one hundred sixty-four million, six hundred one thousand, two hundred fifty-one".