1131747645 has 32 divisors (see below), whose sum is σ = 2085304320. Its totient is φ = 513414720.

The previous prime is 1131747619. The next prime is 1131747671. The reversal of 1131747645 is 5467471311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1131747619) and next prime (1131747671).

It is not a de Polignac number, because 1131747645 - 2⁷ = 1131747517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27385 + ... + 54894.

It is an arithmetic number, because the mean of its divisors is an integer number (65165760).

Almost surely, 2^1131747645 is an apocalyptic number.

1131747645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131747645 is a deficient number, since it is larger than the sum of its proper divisors (953556675).

1131747645 is a wasteful number, since it uses less digits than its factorization.

1131747645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82425.

The product of its digits is 70560, while the sum is 39.

The square root of 1131747645 is about 33641.4572365705. The cubic root of 1131747645 is about 1042.1171261632.

The spelling of 1131747645 in words is "one billion, one hundred thirty-one million, seven hundred forty-seven thousand, six hundred forty-five".