1650772992 has 132 divisors (see below), whose sum is σ = 4837355768. Its totient is φ = 500121600.

The previous prime is 1650772969. The next prime is 1650772993. The reversal of 1650772992 is 2992770561.

It is a tau number, because it is divible by the number of its divisors (132).

It is a super-2 number, since 2×1650772992² = 5450102942233264128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650772993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 369492 + ... + 373932.

Almost surely, 2^1650772992 is an apocalyptic number.

1650772992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1650772992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2418677884).

1650772992 is an abundant number, since it is smaller than the sum of its proper divisors (3186582776).

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

1650772992 is a wasteful number, since it uses less digits than its factorization.

1650772992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 4457 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 1650772992 is about 40629.7057828383. The cubic root of 1650772992 is about 1181.8502505826.

The spelling of 1650772992 in words is "one billion, six hundred fifty million, seven hundred seventy-two thousand, nine hundred ninety-two".