162947961 has 12 divisors (see below), whose sum is σ = 256766640. Its totient is φ = 98756280.

The previous prime is 162947947. The next prime is 162947989. The reversal of 162947961 is 169749261.

It is not a de Polignac number, because 162947961 - 2⁵ = 162947929 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (162947761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822871 + ... + 823068.

It is an arithmetic number, because the mean of its divisors is an integer number (21397220).

Almost surely, 2^162947961 is an apocalyptic number.

162947961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162947961 is a deficient number, since it is larger than the sum of its proper divisors (93818679).

162947961 is a wasteful number, since it uses less digits than its factorization.

162947961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645956 (or 1645953 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 162947961 is about 12765.1071675877. The cubic root of 162947961 is about 546.1974188488.

The spelling of 162947961 in words is "one hundred sixty-two million, nine hundred forty-seven thousand, nine hundred sixty-one".