1151631145 has 8 divisors (see below), whose sum is σ = 1579379904. Its totient is φ = 789689904.

The previous prime is 1151631133. The next prime is 1151631149. The reversal of 1151631145 is 5411361511.

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

It is a cyclic number.

It is not a de Polignac number, because 1151631145 - 2⁵ = 1151631113 is a prime.

It is a super-2 number, since 2×1151631145² = 2652508588268022050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151631149) 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, 16451839 + ... + 16451908.

It is an arithmetic number, because the mean of its divisors is an integer number (197422488).

Almost surely, 2^1151631145 is an apocalyptic number.

It is an amenable number.

1151631145 is a deficient number, since it is larger than the sum of its proper divisors (427748759).

1151631145 is an equidigital number, since it uses as much as digits as its factorization.

1151631145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32903759.

The product of its digits is 1800, while the sum is 28.

The square root of 1151631145 is about 33935.6913146027. The cubic root of 1151631145 is about 1048.1846622255.

Adding to 1151631145 its reverse (5411361511), we get a palindrome (6562992656).

The spelling of 1151631145 in words is "one billion, one hundred fifty-one million, six hundred thirty-one thousand, one hundred forty-five".