168147490 has 16 divisors (see below), whose sum is σ = 345903552. Its totient is φ = 57650544.

The previous prime is 168147451. The next prime is 168147517. The reversal of 168147490 is 94741861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200984 + ... + 1201123.

It is an arithmetic number, because the mean of its divisors is an integer number (21618972).

Almost surely, 2^168147490 is an apocalyptic number.

168147490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168147490 is an abundant number, since it is smaller than the sum of its proper divisors (177756062).

168147490 is a wasteful number, since it uses less digits than its factorization.

168147490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402121.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 168147490 is about 12967.1696988973. The cubic root of 168147490 is about 551.9462617469.

The spelling of 168147490 in words is "one hundred sixty-eight million, one hundred forty-seven thousand, four hundred ninety".