1157779572 has 48 divisors (see below), whose sum is σ = 2732837184. Its totient is φ = 381472000.

The previous prime is 1157779561. The next prime is 1157779591. The reversal of 1157779572 is 2759777511.

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, 440422 + ... + 443042.

It is an arithmetic number, because the mean of its divisors is an integer number (56934108).

Almost surely, 2^1157779572 is an apocalyptic number.

1157779572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1157779572 is an abundant number, since it is smaller than the sum of its proper divisors (1575057612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1157779572 is a wasteful number, since it uses less digits than its factorization.

1157779572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040 (or 3038 counting only the distinct ones).

The product of its digits is 1080450, while the sum is 51.

The square root of 1157779572 is about 34026.1601124782. The cubic root of 1157779572 is about 1050.0467317070.

The spelling of 1157779572 in words is "one billion, one hundred fifty-seven million, seven hundred seventy-nine thousand, five hundred seventy-two".