149596381 has 4 divisors (see below), whose sum is σ = 163196064. Its totient is φ = 135996700.

The previous prime is 149596373. The next prime is 149596399. The reversal of 149596381 is 183695941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149596381 - 2³ = 149596373 is a prime.

It is a super-2 number, since 2×149596381² = 44758154416594322, 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 (149596081) 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, 6799825 + ... + 6799846.

It is an arithmetic number, because the mean of its divisors is an integer number (40799016).

Almost surely, 2^149596381 is an apocalyptic number.

149596381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

149596381 is a deficient number, since it is larger than the sum of its proper divisors (13599683).

149596381 is a wasteful number, since it uses less digits than its factorization.

149596381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13599682.

The product of its digits is 233280, while the sum is 46.

The square root of 149596381 is about 12230.9599377972. The cubic root of 149596381 is about 530.8522907389.

The spelling of 149596381 in words is "one hundred forty-nine million, five hundred ninety-six thousand, three hundred eighty-one".