149471945 has 16 divisors (see below), whose sum is σ = 212060160. Its totient is φ = 98960064.

The previous prime is 149471923. The next prime is 149471951. The reversal of 149471945 is 549174941.

It is not a de Polignac number, because 149471945 - 2¹⁰ = 149470921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149471896 and 149471905.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72617 + ... + 74646.

It is an arithmetic number, because the mean of its divisors is an integer number (13253760).

Almost surely, 2^149471945 is an apocalyptic number.

It is an amenable number.

149471945 is a deficient number, since it is larger than the sum of its proper divisors (62588215).

149471945 is a wasteful number, since it uses less digits than its factorization.

149471945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147304.

The product of its digits is 181440, while the sum is 44.

The square root of 149471945 is about 12225.8719525439. The cubic root of 149471945 is about 530.7050602169.

The spelling of 149471945 in words is "one hundred forty-nine million, four hundred seventy-one thousand, nine hundred forty-five".