161926797 has 16 divisors (see below), whose sum is σ = 232104960. Its totient is φ = 100091952.

The previous prime is 161926783. The next prime is 161926811. The reversal of 161926797 is 797629161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161926783) and next prime (161926811).

It is not a de Polignac number, because 161926797 - 2⁷ = 161926669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161926727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27543 + ... + 32900.

It is an arithmetic number, because the mean of its divisors is an integer number (14506560).

Almost surely, 2^161926797 is an apocalyptic number.

It is an amenable number.

161926797 is a deficient number, since it is larger than the sum of its proper divisors (70178163).

161926797 is a wasteful number, since it uses less digits than its factorization.

161926797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60512.

The product of its digits is 285768, while the sum is 48.

The square root of 161926797 is about 12725.0460509972. The cubic root of 161926797 is about 545.0540551833.

The spelling of 161926797 in words is "one hundred sixty-one million, nine hundred twenty-six thousand, seven hundred ninety-seven".