1650936972 has 12 divisors (see below), whose sum is σ = 3852186296. Its totient is φ = 550312320.

The previous prime is 1650936971. The next prime is 1650936977. The reversal of 1650936972 is 2796390561.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1650936971) 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, 68789029 + ... + 68789052.

Almost surely, 2^1650936972 is an apocalyptic number.

1650936972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1650936972 is an abundant number, since it is smaller than the sum of its proper divisors (2201249324).

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

1650936972 is a wasteful number, since it uses less digits than its factorization.

1650936972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137578088 (or 137578086 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 48.

The square root of 1650936972 is about 40631.7237143590. The cubic root of 1650936972 is about 1181.8893824293.

The spelling of 1650936972 in words is "one billion, six hundred fifty million, nine hundred thirty-six thousand, nine hundred seventy-two".