1957652820 has 192 divisors, whose sum is σ = 6400880640. Its totient is φ = 495766656.

The previous prime is 1957652791. The next prime is 1957652831. The reversal of 1957652820 is 282567591.

1957652820 is a `hidden beast` number, since 1 + 9 + 576 + 52 + 8 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2023977 + ... + 2024943.

It is an arithmetic number, because the mean of its divisors is an integer number (33337920).

Almost surely, 2^1957652820 is an apocalyptic number.

1957652820 is a gapful number since it is divisible by the number (10) 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 1957652820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3200440320).

1957652820 is an abundant number, since it is smaller than the sum of its proper divisors (4443227820).

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

1957652820 is a wasteful number, since it uses less digits than its factorization.

1957652820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 1957652820 is about 44245.3706052961. The cubic root of 1957652820 is about 1250.9651894689.

The spelling of 1957652820 in words is "one billion, nine hundred fifty-seven million, six hundred fifty-two thousand, eight hundred twenty".