1957141279 has 4 divisors (see below), whose sum is σ = 1957304376. Its totient is φ = 1956978184.

The previous prime is 1957141253. The next prime is 1957141289. The reversal of 1957141279 is 9721417591.

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 1957141279 - 2¹⁵ = 1957108511 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 (1957141289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61984 + ... + 88069.

It is an arithmetic number, because the mean of its divisors is an integer number (489326094).

Almost surely, 2^1957141279 is an apocalyptic number.

1957141279 is a deficient number, since it is larger than the sum of its proper divisors (163097).

1957141279 is a wasteful number, since it uses less digits than its factorization.

1957141279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163096.

The product of its digits is 158760, while the sum is 46.

The square root of 1957141279 is about 44239.5894985476. The cubic root of 1957141279 is about 1250.8562195632.

The spelling of 1957141279 in words is "one billion, nine hundred fifty-seven million, one hundred forty-one thousand, two hundred seventy-nine".