161690300 has 36 divisors (see below), whose sum is σ = 351498336. Its totient is φ = 64560000.

The previous prime is 161690297. The next prime is 161690303. The reversal of 161690300 is 3096161.

161690300 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161690297) and next prime (161690303).

It is a super-2 number, since 2×161690300² = 52287506228180000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161690300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161690303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74024 + ... + 76176.

Almost surely, 2^161690300 is an apocalyptic number.

161690300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161690300 is an abundant number, since it is smaller than the sum of its proper divisors (189808036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161690300 is a wasteful number, since it uses less digits than its factorization.

161690300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918 (or 2911 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 161690300 is about 12715.7500761850. The cubic root of 161690300 is about 544.7885721428.

The spelling of 161690300 in words is "one hundred sixty-one million, six hundred ninety thousand, three hundred".