1157612566 has 12 divisors (see below), whose sum is σ = 1908626076. Its totient is φ = 526187420.

The previous prime is 1157612557. The next prime is 1157612593. The reversal of 1157612566 is 6652167511.

It is a super-2 number, since 2×1157612566² = 2680133705922208712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2391520 + ... + 2392003.

It is an arithmetic number, because the mean of its divisors is an integer number (159052173).

Almost surely, 2^1157612566 is an apocalyptic number.

1157612566 is a deficient number, since it is larger than the sum of its proper divisors (751013510).

1157612566 is a wasteful number, since it uses less digits than its factorization.

1157612566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783547 (or 4783536 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 1157612566 is about 34023.7059415931. The cubic root of 1157612566 is about 1049.9962406517.

Subtracting 1157612566 from its reverse (6652167511), we obtain a palindrome (5494554945).

It can be divided in two parts, 11576 and 12566, that added together give a palindrome (24142).

The spelling of 1157612566 in words is "one billion, one hundred fifty-seven million, six hundred twelve thousand, five hundred sixty-six".