161362641 has 32 divisors (see below), whose sum is σ = 253393920. Its totient is φ = 90305600.

The previous prime is 161362637. The next prime is 161362667. The reversal of 161362641 is 146263161.

161362641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161362641 - 2² = 161362637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161362599 and 161362608.

It is not an unprimeable number, because it can be changed into a prime (161362601) 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, 18346 + ... + 25676.

It is an arithmetic number, because the mean of its divisors is an integer number (7918560).

Almost surely, 2^161362641 is an apocalyptic number.

161362641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161362641 is a deficient number, since it is larger than the sum of its proper divisors (92031279).

161362641 is a wasteful number, since it uses less digits than its factorization.

161362641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7397.

The product of its digits is 5184, while the sum is 30.

The square root of 161362641 is about 12702.8595599574. The cubic root of 161362641 is about 544.4203257846.

The spelling of 161362641 in words is "one hundred sixty-one million, three hundred sixty-two thousand, six hundred forty-one".