149253815 has 8 divisors (see below), whose sum is σ = 179787168. Its totient is φ = 118948000.

The previous prime is 149253791. The next prime is 149253833. The reversal of 149253815 is 518352941.

It is a happy number.

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

It is not a de Polignac number, because 149253815 - 2¹⁰ = 149252791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55436 + ... + 58065.

It is an arithmetic number, because the mean of its divisors is an integer number (22473396).

Almost surely, 2^149253815 is an apocalyptic number.

149253815 is a deficient number, since it is larger than the sum of its proper divisors (30533353).

149253815 is a wasteful number, since it uses less digits than its factorization.

149253815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113769.

The product of its digits is 43200, while the sum is 38.

The square root of 149253815 is about 12216.9478594287. The cubic root of 149253815 is about 530.4467752864.

The spelling of 149253815 in words is "one hundred forty-nine million, two hundred fifty-three thousand, eight hundred fifteen".