1957744942 has 8 divisors (see below), whose sum is σ = 2936855376. Its totient is φ = 978793152.

The previous prime is 1957744937. The next prime is 1957744969. The reversal of 1957744942 is 2494477591.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1957744942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443 + ... + 62590.

It is an arithmetic number, because the mean of its divisors is an integer number (367106922).

Almost surely, 2^1957744942 is an apocalyptic number.

1957744942 is a deficient number, since it is larger than the sum of its proper divisors (979110434).

1957744942 is a wasteful number, since it uses less digits than its factorization.

1957744942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79322.

The product of its digits is 2540160, while the sum is 52.

The square root of 1957744942 is about 44246.4116285151. The cubic root of 1957744942 is about 1250.9848115399.

The spelling of 1957744942 in words is "one billion, nine hundred fifty-seven million, seven hundred forty-four thousand, nine hundred forty-two".