1957623402 has 96 divisors (see below), whose sum is σ = 4722554880. Its totient is φ = 538846560.

The previous prime is 1957623401. The next prime is 1957623443. The reversal of 1957623402 is 2043267591.

It is not an unprimeable number, because it can be changed into a prime (1957623401) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 3162249 + ... + 3162867.

It is an arithmetic number, because the mean of its divisors is an integer number (49193280).

Almost surely, 2^1957623402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1957623402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2361277440).

1957623402 is an abundant number, since it is smaller than the sum of its proper divisors (2764931478).

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

1957623402 is a wasteful number, since it uses less digits than its factorization.

1957623402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1957623402 is about 44245.0381624878. The cubic root of 1957623402 is about 1250.9589232781.

The spelling of 1957623402 in words is "one billion, nine hundred fifty-seven million, six hundred twenty-three thousand, four hundred two".