169481490 has 32 divisors (see below), whose sum is σ = 416218176. Its totient is φ = 44143680.

The previous prime is 169481489. The next prime is 169481491. The reversal of 169481490 is 94184961.

It is an interprime number because it is at equal distance from previous prime (169481489) and next prime (169481491).

It is not an unprimeable number, because it can be changed into a prime (169481491) 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, 64401 + ... + 66980.

It is an arithmetic number, because the mean of its divisors is an integer number (13006818).

Almost surely, 2^169481490 is an apocalyptic number.

169481490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

169481490 is an abundant number, since it is smaller than the sum of its proper divisors (246736686).

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

169481490 is a wasteful number, since it uses less digits than its factorization.

169481490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131434.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 169481490 is about 13018.5056746157. The cubic root of 169481490 is about 553.4020426444.

The spelling of 169481490 in words is "one hundred sixty-nine million, four hundred eighty-one thousand, four hundred ninety".