161674907 has 2 divisors, whose sum is σ = 161674908. Its totient is φ = 161674906.

The previous prime is 161674861. The next prime is 161674939. The reversal of 161674907 is 709476161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161674907 - 2²⁴ = 144897691 is a prime.

It is a super-2 number, since 2×161674907² = 52277551106917298, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (161674987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80837453 + 80837454.

It is an arithmetic number, because the mean of its divisors is an integer number (80837454).

Almost surely, 2^161674907 is an apocalyptic number.

161674907 is a deficient number, since it is larger than the sum of its proper divisors (1).

161674907 is an equidigital number, since it uses as much as digits as its factorization.

161674907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 161674907 is about 12715.1447887942. The cubic root of 161674907 is about 544.7712835431.

The spelling of 161674907 in words is "one hundred sixty-one million, six hundred seventy-four thousand, nine hundred seven".