149974451 has 8 divisors (see below), whose sum is σ = 163748208. Its totient is φ = 136224000.

The previous prime is 149974439. The next prime is 149974453. The reversal of 149974451 is 154479941.

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

It is not a de Polignac number, because 149974451 - 2⁶ = 149974387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149974453) 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, 9371 + ... + 19691.

It is an arithmetic number, because the mean of its divisors is an integer number (20468526).

Almost surely, 2^149974451 is an apocalyptic number.

149974451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

149974451 is a deficient number, since it is larger than the sum of its proper divisors (13773757).

149974451 is a wasteful number, since it uses less digits than its factorization.

149974451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11653.

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

The square root of 149974451 is about 12246.4056359407. The cubic root of 149974451 is about 531.2991163631.

The spelling of 149974451 in words is "one hundred forty-nine million, nine hundred seventy-four thousand, four hundred fifty-one".