1400571957 has 4 divisors (see below), whose sum is σ = 1867429280. Its totient is φ = 933714636.

The previous prime is 1400571929. The next prime is 1400572001. The reversal of 1400571957 is 7591750041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7591750041 = 3 ⋅2530583347.

It is not a de Polignac number, because 1400571957 - 2¹¹ = 1400569909 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 (1400573957) 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, 233428657 + ... + 233428662.

It is an arithmetic number, because the mean of its divisors is an integer number (466857320).

Almost surely, 2^1400571957 is an apocalyptic number.

It is an amenable number.

1400571957 is a deficient number, since it is larger than the sum of its proper divisors (466857323).

1400571957 is an equidigital number, since it uses as much as digits as its factorization.

1400571957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466857322.

The product of its (nonzero) digits is 44100, while the sum is 39.

The square root of 1400571957 is about 37424.2161841768. The cubic root of 1400571957 is about 1118.8412646664.

The spelling of 1400571957 in words is "one billion, four hundred million, five hundred seventy-one thousand, nine hundred fifty-seven".