1957740551 has 12 divisors (see below), whose sum is σ = 2178554616. Its totient is φ = 1748838960.

The previous prime is 1957740541. The next prime is 1957740583. The reversal of 1957740551 is 1550477591.

It is not a de Polignac number, because 1957740551 - 2¹⁸ = 1957478407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957740511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65861 + ... + 90846.

It is an arithmetic number, because the mean of its divisors is an integer number (181546218).

Almost surely, 2^1957740551 is an apocalyptic number.

1957740551 is a deficient number, since it is larger than the sum of its proper divisors (220814065).

1957740551 is a wasteful number, since it uses less digits than its factorization.

1957740551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156782 (or 156751 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 44.

The square root of 1957740551 is about 44246.3620086443. The cubic root of 1957740551 is about 1250.9838762668.

The spelling of 1957740551 in words is "one billion, nine hundred fifty-seven million, seven hundred forty thousand, five hundred fifty-one".