1002158956 has 12 divisors (see below), whose sum is σ = 1757618968. Its totient is φ = 499982112.

The previous prime is 1002158953. The next prime is 1002158977. The reversal of 1002158956 is 6598512001.

It is not an unprimeable number, because it can be changed into a prime (1002158953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272286 + ... + 275941.

Almost surely, 2^1002158956 is an apocalyptic number.

It is an amenable number.

1002158956 is a deficient number, since it is larger than the sum of its proper divisors (755460012).

1002158956 is a wasteful number, since it uses less digits than its factorization.

1002158956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548688 (or 548686 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 1002158956 is about 31656.8942886064. The cubic root of 1002158956 is about 1000.7191347213.

The spelling of 1002158956 in words is "one billion, two million, one hundred fifty-eight thousand, nine hundred fifty-six".