161975703 has 8 divisors (see below), whose sum is σ = 227334400. Its totient is φ = 102300408.

The previous prime is 161975699. The next prime is 161975717. The reversal of 161975703 is 307579161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161975703 - 2² = 161975699 is a prime.

It is a super-2 number, since 2×161975703² = 52472256724688418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161975773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420783 + ... + 1420896.

It is an arithmetic number, because the mean of its divisors is an integer number (28416800).

Almost surely, 2^161975703 is an apocalyptic number.

161975703 is a deficient number, since it is larger than the sum of its proper divisors (65358697).

161975703 is a wasteful number, since it uses less digits than its factorization.

161975703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841701.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 161975703 is about 12726.9675492633. The cubic root of 161975703 is about 545.1089230432.

The spelling of 161975703 in words is "one hundred sixty-one million, nine hundred seventy-five thousand, seven hundred three".