149301823 has 4 divisors (see below), whose sum is σ = 162874728. Its totient is φ = 135728920.

The previous prime is 149301821. The next prime is 149301827. The reversal of 149301823 is 328103941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149301823 - 2¹ = 149301821 is a prime.

It is a super-2 number, since 2×149301823² = 44582068702246658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149301821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6786436 + ... + 6786457.

It is an arithmetic number, because the mean of its divisors is an integer number (40718682).

Almost surely, 2^149301823 is an apocalyptic number.

149301823 is a deficient number, since it is larger than the sum of its proper divisors (13572905).

149301823 is a wasteful number, since it uses less digits than its factorization.

149301823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13572904.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 149301823 is about 12218.9125129858. The cubic root of 149301823 is about 530.5036425294.

The spelling of 149301823 in words is "one hundred forty-nine million, three hundred one thousand, eight hundred twenty-three".