149690541 has 48 divisors (see below), whose sum is σ = 272801088. Its totient is φ = 71769600.

The previous prime is 149690501. The next prime is 149690557. The reversal of 149690541 is 145096941.

It is not a de Polignac number, because 149690541 - 2⁹ = 149690029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 149690541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149690501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17461 + ... + 24581.

It is an arithmetic number, because the mean of its divisors is an integer number (5683356).

Almost surely, 2^149690541 is an apocalyptic number.

149690541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

149690541 is a deficient number, since it is larger than the sum of its proper divisors (123110547).

149690541 is a wasteful number, since it uses less digits than its factorization.

149690541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162 (or 7155 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 149690541 is about 12234.8085804397. The cubic root of 149690541 is about 530.9636449658.

The spelling of 149690541 in words is "one hundred forty-nine million, six hundred ninety thousand, five hundred forty-one".