149621954074 has 4 divisors (see below), whose sum is σ = 224432931114. Its totient is φ = 74810977036.

The previous prime is 149621954071. The next prime is 149621954107. The reversal of 149621954074 is 470459126941.

It is a happy number.

149621954074 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 470459126941 = 179 ⋅2628263279.

It can be written as a sum of positive squares in only one way, i.e., 116536890625 + 33085063449 = 341375^2 + 181893^2 .

It is not an unprimeable number, because it can be changed into a prime (149621954071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37405488517 + ... + 37405488520.

Almost surely, 2^149621954074 is an apocalyptic number.

149621954074 is a deficient number, since it is larger than the sum of its proper divisors (74810977040).

149621954074 is an equidigital number, since it uses as much as digits as its factorization.

149621954074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74810977039.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 149621954074 in words is "one hundred forty-nine billion, six hundred twenty-one million, nine hundred fifty-four thousand, seventy-four".