149901694 has 4 divisors (see below), whose sum is σ = 224852544. Its totient is φ = 74950846.

The previous prime is 149901691. The next prime is 149901707. The reversal of 149901694 is 496109941.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 149901694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149901691) by changing a digit.

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 as a sum of consecutive naturals, namely, 37475422 + ... + 37475425.

It is an arithmetic number, because the mean of its divisors is an integer number (56213136).

Almost surely, 2^149901694 is an apocalyptic number.

149901694 is a deficient number, since it is larger than the sum of its proper divisors (74950850).

149901694 is an equidigital number, since it uses as much as digits as its factorization.

149901694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74950849.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 149901694 is about 12243.4347304994. The cubic root of 149901694 is about 531.2131862102.

The spelling of 149901694 in words is "one hundred forty-nine million, nine hundred one thousand, six hundred ninety-four".