1956813698 has 16 divisors (see below), whose sum is σ = 3425912064. Its totient is φ = 820790880.

The previous prime is 1956813641. The next prime is 1956813707. The reversal of 1956813698 is 8963186591.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486283 + ... + 1487598.

It is an arithmetic number, because the mean of its divisors is an integer number (214119504).

Almost surely, 2^1956813698 is an apocalyptic number.

1956813698 is a deficient number, since it is larger than the sum of its proper divisors (1469098366).

1956813698 is a wasteful number, since it uses less digits than its factorization.

1956813698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973937.

The product of its digits is 2799360, while the sum is 56.

The square root of 1956813698 is about 44235.8869923505. The cubic root of 1956813698 is about 1250.7864273618.

The spelling of 1956813698 in words is "one billion, nine hundred fifty-six million, eight hundred thirteen thousand, six hundred ninety-eight".