1157191072 has 48 divisors (see below), whose sum is σ = 2329689600. Its totient is φ = 565634560.

The previous prime is 1157191069. The next prime is 1157191099. The reversal of 1157191072 is 2701917511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359004 + ... + 362212.

It is an arithmetic number, because the mean of its divisors is an integer number (48535200).

Almost surely, 2^1157191072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1157191072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1164844800).

1157191072 is an abundant number, since it is smaller than the sum of its proper divisors (1172498528).

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

1157191072 is a wasteful number, since it uses less digits than its factorization.

1157191072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469 (or 3461 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 34.

The square root of 1157191072 is about 34017.5112552344. The cubic root of 1157191072 is about 1049.8687884415.

The spelling of 1157191072 in words is "one billion, one hundred fifty-seven million, one hundred ninety-one thousand, seventy-two".