149745973 has 16 divisors (see below), whose sum is σ = 170262400. Its totient is φ = 130559040.

The previous prime is 149745949. The next prime is 149745983. The reversal of 149745973 is 379547941.

It is a cyclic number.

It is not a de Polignac number, because 149745973 - 2²¹ = 147648821 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 (149745913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107743 + ... + 109123.

It is an arithmetic number, because the mean of its divisors is an integer number (10641400).

Almost surely, 2^149745973 is an apocalyptic number.

149745973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

149745973 is a deficient number, since it is larger than the sum of its proper divisors (20516427).

149745973 is a wasteful number, since it uses less digits than its factorization.

149745973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852.

The product of its digits is 952560, while the sum is 49.

The square root of 149745973 is about 12237.0737106548. The cubic root of 149745973 is about 531.0291773730.

The spelling of 149745973 in words is "one hundred forty-nine million, seven hundred forty-five thousand, nine hundred seventy-three".