1957136454 has 96 divisors (see below), whose sum is σ = 5387526144. Its totient is φ = 499504320.

The previous prime is 1957136437. The next prime is 1957136471. The reversal of 1957136454 is 4546317591.

1957136454 is a `hidden beast` number, since 1 + 9 + 571 + 36 + 45 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1957136437) and next prime (1957136471).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31507 + ... + 70049.

It is an arithmetic number, because the mean of its divisors is an integer number (56120064).

Almost surely, 2^1957136454 is an apocalyptic number.

1957136454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1957136454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2693763072).

1957136454 is an abundant number, since it is smaller than the sum of its proper divisors (3430389690).

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

1957136454 is a wasteful number, since it uses less digits than its factorization.

1957136454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38602 (or 38599 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 1957136454 is about 44239.5349659103. The cubic root of 1957136454 is about 1250.8551916377.

The spelling of 1957136454 in words is "one billion, nine hundred fifty-seven million, one hundred thirty-six thousand, four hundred fifty-four".