1957434511 has 4 divisors (see below), whose sum is σ = 2060457400. Its totient is φ = 1854411624.

The previous prime is 1957434509. The next prime is 1957434517. The reversal of 1957434511 is 1154347591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1957434511 - 2¹ = 1957434509 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 (1957434517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51511416 + ... + 51511453.

It is an arithmetic number, because the mean of its divisors is an integer number (515114350).

Almost surely, 2^1957434511 is an apocalyptic number.

1957434511 is a deficient number, since it is larger than the sum of its proper divisors (103022889).

1957434511 is a wasteful number, since it uses less digits than its factorization.

1957434511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103022888.

The product of its digits is 75600, while the sum is 40.

The square root of 1957434511 is about 44242.9035100546. The cubic root of 1957434511 is about 1250.9186869926.

The spelling of 1957434511 in words is "one billion, nine hundred fifty-seven million, four hundred thirty-four thousand, five hundred eleven".