1957672642 has 8 divisors (see below), whose sum is σ = 2963953296. Its totient is φ = 969688212.

The previous prime is 1957672631. The next prime is 1957672663. The reversal of 1957672642 is 2462767591.

It is a happy number.

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

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, 4573788 + ... + 4574215.

It is an arithmetic number, because the mean of its divisors is an integer number (370494162).

Almost surely, 2^1957672642 is an apocalyptic number.

1957672642 is a deficient number, since it is larger than the sum of its proper divisors (1006280654).

1957672642 is a wasteful number, since it uses less digits than its factorization.

1957672642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9148112.

The product of its digits is 1270080, while the sum is 49.

The square root of 1957672642 is about 44245.5946055650. The cubic root of 1957672642 is about 1250.9694116252.

The spelling of 1957672642 in words is "one billion, nine hundred fifty-seven million, six hundred seventy-two thousand, six hundred forty-two".