1157780732 has 24 divisors (see below), whose sum is σ = 2167725840. Its totient is φ = 539429760.

The previous prime is 1157780731. The next prime is 1157780749. The reversal of 1157780732 is 2370877511.

It is a self number, because there is not a number n which added to its sum of digits gives 1157780732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157780731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120233 + ... + 129504.

It is an arithmetic number, because the mean of its divisors is an integer number (90321910).

Almost surely, 2^1157780732 is an apocalyptic number.

It is an amenable number.

1157780732 is a deficient number, since it is larger than the sum of its proper divisors (1009945108).

1157780732 is a wasteful number, since it uses less digits than its factorization.

1157780732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249821 (or 249819 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 1157780732 is about 34026.1771581822. The cubic root of 1157780732 is about 1050.0470823937.

The spelling of 1157780732 in words is "one billion, one hundred fifty-seven million, seven hundred eighty thousand, seven hundred thirty-two".