1157821002 has 48 divisors (see below), whose sum is σ = 2704141440. Its totient is φ = 355915296.

The previous prime is 1157820973. The next prime is 1157821009. The reversal of 1157821002 is 2001287511.

It is not an unprimeable number, because it can be changed into a prime (1157821009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374499 + ... + 377577.

It is an arithmetic number, because the mean of its divisors is an integer number (56336280).

Almost surely, 2^1157821002 is an apocalyptic number.

1157821002 is an abundant number, since it is smaller than the sum of its proper divisors (1546320438).

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

1157821002 is a wasteful number, since it uses less digits than its factorization.

1157821002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4707 (or 4704 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1157821002 is about 34026.7689033208. The cubic root of 1157821002 is about 1050.0592565198.

The spelling of 1157821002 in words is "one billion, one hundred fifty-seven million, eight hundred twenty-one thousand, two".