1157962261 has 4 divisors (see below), whose sum is σ = 1177588800. Its totient is φ = 1138335724.

The previous prime is 1157962231. The next prime is 1157962279. The reversal of 1157962261 is 1622697511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1157962261 - 2⁵ = 1157962229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157962231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9813181 + ... + 9813298.

It is an arithmetic number, because the mean of its divisors is an integer number (294397200).

Almost surely, 2^1157962261 is an apocalyptic number.

It is an amenable number.

1157962261 is a deficient number, since it is larger than the sum of its proper divisors (19626539).

1157962261 is an equidigital number, since it uses as much as digits as its factorization.

1157962261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19626538.

The product of its digits is 45360, while the sum is 40.

The square root of 1157962261 is about 34028.8445440041. The cubic root of 1157962261 is about 1050.1019586555.

The spelling of 1157962261 in words is "one billion, one hundred fifty-seven million, nine hundred sixty-two thousand, two hundred sixty-one".