161330951 has 2 divisors, whose sum is σ = 161330952. Its totient is φ = 161330950.

The previous prime is 161330933. The next prime is 161330959. The reversal of 161330951 is 159033161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161330951 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161330959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80665475 + 80665476.

It is an arithmetic number, because the mean of its divisors is an integer number (80665476).

Almost surely, 2^161330951 is an apocalyptic number.

161330951 is a deficient number, since it is larger than the sum of its proper divisors (1).

161330951 is an equidigital number, since it uses as much as digits as its factorization.

161330951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 161330951 is about 12701.6121417716. The cubic root of 161330951 is about 544.3846838922.

The spelling of 161330951 in words is "one hundred sixty-one million, three hundred thirty thousand, nine hundred fifty-one".