1957942764 has 72 divisors (see below), whose sum is σ = 5247086208. Its totient is φ = 614511360.

The previous prime is 1957942739. The next prime is 1957942783. The reversal of 1957942764 is 4672497591.

1957942764 is a `hidden beast` number, since 1 + 9 + 579 + 4 + 2 + 7 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1957942764.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17584 + ... + 65000.

Almost surely, 2^1957942764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1957942764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2623543104).

1957942764 is an abundant number, since it is smaller than the sum of its proper divisors (3289143444).

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

1957942764 is a wasteful number, since it uses less digits than its factorization.

1957942764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47495 (or 47490 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 1957942764 is about 44248.6470301635. The cubic root of 1957942764 is about 1251.0269457283.

The spelling of 1957942764 in words is "one billion, nine hundred fifty-seven million, nine hundred forty-two thousand, seven hundred sixty-four".