1957049742 has 32 divisors (see below), whose sum is σ = 4123163520. Its totient is φ = 617556960.

The previous prime is 1957049729. The next prime is 1957049753. The reversal of 1957049742 is 2479407591.

It is a junction number, because it is equal to n+sod(n) for n = 1957049691 and 1957049700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168928 + ... + 180140.

It is an arithmetic number, because the mean of its divisors is an integer number (128848860).

Almost surely, 2^1957049742 is an apocalyptic number.

1957049742 is an abundant number, since it is smaller than the sum of its proper divisors (2166113778).

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

1957049742 is a wasteful number, since it uses less digits than its factorization.

1957049742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12768.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 1957049742 is about 44238.5549266700. The cubic root of 1957049742 is about 1250.8367180906.

The spelling of 1957049742 in words is "one billion, nine hundred fifty-seven million, forty-nine thousand, seven hundred forty-two".