1157440405 has 16 divisors (see below), whose sum is σ = 1520607168. Its totient is φ = 838768000.

The previous prime is 1157440391. The next prime is 1157440429. The reversal of 1157440405 is 5040447511.

1157440405 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1157440405 - 2¹⁵ = 1157407637 is a prime.

It is a super-2 number, since 2×1157440405² = 2679336582253128050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21991 + ... + 52900.

It is an arithmetic number, because the mean of its divisors is an integer number (95037948).

Almost surely, 2^1157440405 is an apocalyptic number.

It is an amenable number.

1157440405 is a deficient number, since it is larger than the sum of its proper divisors (363166763).

1157440405 is a wasteful number, since it uses less digits than its factorization.

1157440405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75188.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 1157440405 is about 34021.1758321196. The cubic root of 1157440405 is about 1049.9441859977.

Adding to 1157440405 its reverse (5040447511), we get a palindrome (6197887916).

The spelling of 1157440405 in words is "one billion, one hundred fifty-seven million, four hundred forty thousand, four hundred five".