161149490 has 16 divisors (see below), whose sum is σ = 292781952. Its totient is φ = 63856944.

The previous prime is 161149463. The next prime is 161149517. The reversal of 161149490 is 94941161.

161149490 is digitally balanced in base 2, because in such base 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 (161149463) and next prime (161149517).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161149490.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74234 + ... + 76373.

It is an arithmetic number, because the mean of its divisors is an integer number (18298872).

Almost surely, 2^161149490 is an apocalyptic number.

161149490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161149490 is a deficient number, since it is larger than the sum of its proper divisors (131632462).

161149490 is a wasteful number, since it uses less digits than its factorization.

161149490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150721.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 161149490 is about 12694.4669049157. The cubic root of 161149490 is about 544.1805039162.

The spelling of 161149490 in words is "one hundred sixty-one million, one hundred forty-nine thousand, four hundred ninety".