958811961 has 16 divisors (see below), whose sum is σ = 1285390400. Its totient is φ = 635731200.

The previous prime is 958811957. The next prime is 958811977. The reversal of 958811961 is 169118859.

It is not a de Polignac number, because 958811961 - 2² = 958811957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 958811961.

It is not an unprimeable number, because it can be changed into a prime (958811921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563490 + ... + 565188.

It is an arithmetic number, because the mean of its divisors is an integer number (80336900).

Almost surely, 2^958811961 is an apocalyptic number.

It is an amenable number.

958811961 is a deficient number, since it is larger than the sum of its proper divisors (326578439).

958811961 is a wasteful number, since it uses less digits than its factorization.

958811961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616.

The product of its digits is 155520, while the sum is 48.

The square root of 958811961 is about 30964.6889375624. The cubic root of 958811961 is about 986.0777233982.

The spelling of 958811961 in words is "nine hundred fifty-eight million, eight hundred eleven thousand, nine hundred sixty-one".