961181970 has 64 divisors (see below), whose sum is σ = 2721447936. Its totient is φ = 212610240.

The previous prime is 961181957. The next prime is 961181971. The reversal of 961181970 is 79181169.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (961181971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67314 + ... + 80333.

It is an arithmetic number, because the mean of its divisors is an integer number (42522624).

Almost surely, 2^961181970 is an apocalyptic number.

961181970 is an abundant number, since it is smaller than the sum of its proper divisors (1760265966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

961181970 is a wasteful number, since it uses less digits than its factorization.

961181970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147695.

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 961181970 is about 31002.9348610740. The cubic root of 961181970 is about 986.8895232285.

The spelling of 961181970 in words is "nine hundred sixty-one million, one hundred eighty-one thousand, nine hundred seventy".