161749629484 has 24 divisors (see below), whose sum is σ = 283452064448. Its totient is φ = 80763400080.

The previous prime is 161749629413. The next prime is 161749629493. The reversal of 161749629484 is 484926947161.

It is a super-2 number, since 2×161749629484² (a number of 23 digits) contains 22 as substring.

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, 10642939 + ... + 10658125.

Almost surely, 2^161749629484 is an apocalyptic number.

It is an amenable number.

161749629484 is a deficient number, since it is larger than the sum of its proper divisors (121702434964).

161749629484 is a wasteful number, since it uses less digits than its factorization.

161749629484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18685 (or 18683 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 61.

The spelling of 161749629484 in words is "one hundred sixty-one billion, seven hundred forty-nine million, six hundred twenty-nine thousand, four hundred eighty-four".