1651249152 has 364 divisors, whose sum is σ = 5729768320. Its totient is φ = 465813504.

The previous prime is 1651249133. The next prime is 1651249153. The reversal of 1651249152 is 2519421561.

1651249152 is a `hidden beast` number, since 1 + 6 + 512 + 4 + 91 + 52 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1651249153) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 20901849 + ... + 20901927.

Almost surely, 2^1651249152 is an apocalyptic number.

1651249152 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 1651249152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2864884160).

1651249152 is an abundant number, since it is smaller than the sum of its proper divisors (4078519168).

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

1651249152 is an frugal number, since it uses more digits than its factorization.

1651249152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 91 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1651249152 is about 40635.5651123496. The cubic root of 1651249152 is about 1181.9638732549.

The spelling of 1651249152 in words is "one billion, six hundred fifty-one million, two hundred forty-nine thousand, one hundred fifty-two".