1131625368 has 24 divisors (see below), whose sum is σ = 3064818900. Its totient is φ = 377208432.

The previous prime is 1131625361. The next prime is 1131625373. The reversal of 1131625368 is 8635261311.

1131625368 is a `hidden beast` number, since 113 + 1 + 6 + 2 + 536 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1131625368² = 2561151947002270848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131625361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7858438 + ... + 7858581.

Almost surely, 2^1131625368 is an apocalyptic number.

1131625368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1131625368 is an abundant number, since it is smaller than the sum of its proper divisors (1933193532).

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

1131625368 is a wasteful number, since it uses less digits than its factorization.

1131625368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15717031 (or 15717024 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1131625368 is about 33639.6398316034. The cubic root of 1131625368 is about 1042.0795937840.

Adding to 1131625368 its reverse (8635261311), we get a palindrome (9766886679).

The spelling of 1131625368 in words is "one billion, one hundred thirty-one million, six hundred twenty-five thousand, three hundred sixty-eight".