1957144630 has 32 divisors (see below), whose sum is σ = 4036803840. Its totient is φ = 669241440.

The previous prime is 1957144627. The next prime is 1957144649. The reversal of 1957144630 is 364417591.

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, 10356 + ... + 63415.

It is an arithmetic number, because the mean of its divisors is an integer number (126150120).

Almost surely, 2^1957144630 is an apocalyptic number.

1957144630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1957144630 is an abundant number, since it is smaller than the sum of its proper divisors (2079659210).

1957144630 is a wasteful number, since it uses less digits than its factorization.

1957144630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74164.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1957144630 is about 44239.6273718484. The cubic root of 1957144630 is about 1250.8569334645.

The spelling of 1957144630 in words is "one billion, nine hundred fifty-seven million, one hundred forty-four thousand, six hundred thirty".