1131165951 has 8 divisors (see below), whose sum is σ = 1508405424. Its totient is φ = 754018560.

The previous prime is 1131165947. The next prime is 1131165979. The reversal of 1131165951 is 1595611311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131165951 - 2² = 1131165947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131165901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14281 + ... + 49661.

It is an arithmetic number, because the mean of its divisors is an integer number (188550678).

Almost surely, 2^1131165951 is an apocalyptic number.

1131165951 is a deficient number, since it is larger than the sum of its proper divisors (377239473).

1131165951 is a wasteful number, since it uses less digits than its factorization.

1131165951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46041.

The product of its digits is 4050, while the sum is 33.

The square root of 1131165951 is about 33632.8106318815. The cubic root of 1131165951 is about 1041.9385536199.

The spelling of 1131165951 in words is "one billion, one hundred thirty-one million, one hundred sixty-five thousand, nine hundred fifty-one".