1651388012 has 6 divisors (see below), whose sum is σ = 2889929028. Its totient is φ = 825694004.

The previous prime is 1651387981. The next prime is 1651388023. The reversal of 1651388012 is 2108831561.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206423498 + ... + 206423505.

It is an arithmetic number, because the mean of its divisors is an integer number (481654838).

Almost surely, 2^1651388012 is an apocalyptic number.

It is an amenable number.

1651388012 is a deficient number, since it is larger than the sum of its proper divisors (1238541016).

1651388012 is a wasteful number, since it uses less digits than its factorization.

1651388012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412847007 (or 412847005 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1651388012 is about 40637.2736782378. The cubic root of 1651388012 is about 1181.9970043146.

The spelling of 1651388012 in words is "one billion, six hundred fifty-one million, three hundred eighty-eight thousand, twelve".