161369494 has 16 divisors (see below), whose sum is σ = 284371920. Its totient is φ = 67707360.

The previous prime is 161369479. The next prime is 161369521. The reversal of 161369494 is 494963161.

It is a super-2 number, since 2×161369494² = 52080227187632072, 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 161369494.

It is a congruent number.

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, 281829 + ... + 282400.

It is an arithmetic number, because the mean of its divisors is an integer number (17773245).

Almost surely, 2^161369494 is an apocalyptic number.

161369494 is a deficient number, since it is larger than the sum of its proper divisors (123002426).

161369494 is a wasteful number, since it uses less digits than its factorization.

161369494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564255.

The product of its digits is 139968, while the sum is 43.

The square root of 161369494 is about 12703.1292995073. The cubic root of 161369494 is about 544.4280327723.

The spelling of 161369494 in words is "one hundred sixty-one million, three hundred sixty-nine thousand, four hundred ninety-four".