161454994 has 8 divisors (see below), whose sum is σ = 245593728. Its totient is φ = 79590420.

The previous prime is 161454991. The next prime is 161455043. The reversal of 161454994 is 499454161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 161454994.

It is not an unprimeable number, because it can be changed into a prime (161454991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568362 + ... + 568645.

It is an arithmetic number, because the mean of its divisors is an integer number (30699216).

Almost surely, 2^161454994 is an apocalyptic number.

161454994 is a deficient number, since it is larger than the sum of its proper divisors (84138734).

161454994 is a wasteful number, since it uses less digits than its factorization.

161454994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137080.

The product of its digits is 155520, while the sum is 43.

The square root of 161454994 is about 12706.4941663702. The cubic root of 161454994 is about 544.5241690307.

The spelling of 161454994 in words is "one hundred sixty-one million, four hundred fifty-four thousand, nine hundred ninety-four".