1651133952 has 240 divisors, whose sum is σ = 5259382128. Its totient is φ = 495452160.

The previous prime is 1651133933. The next prime is 1651133977. The reversal of 1651133952 is 2593311561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2575552 + ... + 2576192.

Almost surely, 2^1651133952 is an apocalyptic number.

1651133952 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 1651133952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2629691064).

1651133952 is an abundant number, since it is smaller than the sum of its proper divisors (3608248176).

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

1651133952 is a wasteful number, since it uses less digits than its factorization.

1651133952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 702 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 1651133952 is about 40634.1476101074. The cubic root of 1651133952 is about 1181.9363859019.

The spelling of 1651133952 in words is "one billion, six hundred fifty-one million, one hundred thirty-three thousand, nine hundred fifty-two".