2151747902 has 16 divisors (see below), whose sum is σ = 3436583760. Its totient is φ = 1006927488.

The previous prime is 2151747883. The next prime is 2151747931. The reversal of 2151747902 is 2097471512.

It is a happy number.

It is a super-2 number, since 2×2151747902² = 9260038067522803208, which contains 22 as substring.

It is a congruent number.

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, 170693 + ... + 182864.

It is an arithmetic number, because the mean of its divisors is an integer number (214786485).

Almost surely, 2^2151747902 is an apocalyptic number.

2151747902 is a deficient number, since it is larger than the sum of its proper divisors (1284835858).

2151747902 is a wasteful number, since it uses less digits than its factorization.

2151747902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353755.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 2151747902 is about 46386.9367602561. The cubic root of 2151747902 is about 1291.0125459702.

The spelling of 2151747902 in words is "two billion, one hundred fifty-one million, seven hundred forty-seven thousand, nine hundred two".