161398853 has 8 divisors (see below), whose sum is σ = 201224640. Its totient is φ = 125765280.

The previous prime is 161398849. The next prime is 161398859. The reversal of 161398853 is 358893161.

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

It is a cyclic number.

It is not a de Polignac number, because 161398853 - 2² = 161398849 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161398859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047968 + ... + 1048121.

It is an arithmetic number, because the mean of its divisors is an integer number (25153080).

Almost surely, 2^161398853 is an apocalyptic number.

It is an amenable number.

161398853 is a deficient number, since it is larger than the sum of its proper divisors (39825787).

161398853 is a wasteful number, since it uses less digits than its factorization.

161398853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096107.

The product of its digits is 155520, while the sum is 44.

The square root of 161398853 is about 12704.2848283561. The cubic root of 161398853 is about 544.4610478794.

The spelling of 161398853 in words is "one hundred sixty-one million, three hundred ninety-eight thousand, eight hundred fifty-three".