13957147894 has 4 divisors (see below), whose sum is σ = 20935721844. Its totient is φ = 6978573946.

The previous prime is 13957147877. The next prime is 13957147901. The reversal of 13957147894 is 49874175931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49874175931 = 24091 ⋅2070241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3489286972 + ... + 3489286975.

It is an arithmetic number, because the mean of its divisors is an integer number (5233930461).

Almost surely, 2^13957147894 is an apocalyptic number.

13957147894 is a deficient number, since it is larger than the sum of its proper divisors (6978573950).

13957147894 is an equidigital number, since it uses as much as digits as its factorization.

13957147894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6978573949.

The product of its digits is 7620480, while the sum is 58.

The spelling of 13957147894 in words is "thirteen billion, nine hundred fifty-seven million, one hundred forty-seven thousand, eight hundred ninety-four".