1957738670 has 48 divisors (see below), whose sum is σ = 3679563888. Its totient is φ = 749898240.

The previous prime is 1957738619. The next prime is 1957738723. The reversal of 1957738670 is 768377591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1100822 + ... + 1102598.

It is an arithmetic number, because the mean of its divisors is an integer number (76657581).

Almost surely, 2^1957738670 is an apocalyptic number.

1957738670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1957738670 is a deficient number, since it is larger than the sum of its proper divisors (1721825218).

1957738670 is a wasteful number, since it uses less digits than its factorization.

1957738670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973 (or 1944 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 53.

The square root of 1957738670 is about 44246.3407526543. The cubic root of 1957738670 is about 1250.9834756176.

The spelling of 1957738670 in words is "one billion, nine hundred fifty-seven million, seven hundred thirty-eight thousand, six hundred seventy".