149693544 has 384 divisors, whose sum is σ = 570286080. Its totient is φ = 34214400.

The previous prime is 149693521. The next prime is 149693567. The reversal of 149693544 is 445396941.

149693544 is a `hidden beast` number, since 1 + 49 + 69 + 3 + 544 = 666.

It is an interprime number because it is at equal distance from previous prime (149693521) and next prime (149693567).

It is a self number, because there is not a number n which added to its sum of digits gives 149693544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2234199 + ... + 2234265.

It is an arithmetic number, because the mean of its divisors is an integer number (1485120).

Almost surely, 2^149693544 is an apocalyptic number.

149693544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149693544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285143040).

149693544 is an abundant number, since it is smaller than the sum of its proper divisors (420592536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149693544 is a wasteful number, since it uses less digits than its factorization.

149693544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 134 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 149693544 is about 12234.9313034442. The cubic root of 149693544 is about 530.9671955646.

The spelling of 149693544 in words is "one hundred forty-nine million, six hundred ninety-three thousand, five hundred forty-four".