149789451 has 16 divisors (see below), whose sum is σ = 231142400. Its totient is φ = 84509568.

The previous prime is 149789449. The next prime is 149789459. The reversal of 149789451 is 154987941.

It is not a de Polignac number, because 149789451 - 2¹ = 149789449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149789451.

It is not an unprimeable number, because it can be changed into a prime (149789459) 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, 43486 + ... + 46803.

It is an arithmetic number, because the mean of its divisors is an integer number (14446400).

Almost surely, 2^149789451 is an apocalyptic number.

149789451 is a deficient number, since it is larger than the sum of its proper divisors (81352949).

149789451 is an equidigital number, since it uses as much as digits as its factorization.

149789451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90378.

The product of its digits is 362880, while the sum is 48.

The square root of 149789451 is about 12238.8500685318. The cubic root of 149789451 is about 531.0805662951.

The spelling of 149789451 in words is "one hundred forty-nine million, seven hundred eighty-nine thousand, four hundred fifty-one".