1157341644 has 36 divisors (see below), whose sum is σ = 2927031016. Its totient is φ = 385579008.

The previous prime is 1157341637. The next prime is 1157341667. The reversal of 1157341644 is 4461437511.

1157341644 is a `hidden beast` number, since 1 + 1 + 5 + 7 + 3 + 4 + 1 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1157341599 and 1157341608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72012 + ... + 86604.

Almost surely, 2^1157341644 is an apocalyptic number.

It is an amenable number.

1157341644 is an abundant number, since it is smaller than the sum of its proper divisors (1769689372).

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

1157341644 is a wasteful number, since it uses less digits than its factorization.

1157341644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16806 (or 16801 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1157341644 is about 34019.7243375075. The cubic root of 1157341644 is about 1049.9143222608.

The spelling of 1157341644 in words is "one billion, one hundred fifty-seven million, three hundred forty-one thousand, six hundred forty-four".