149749951 has 16 divisors (see below), whose sum is σ = 167157760. Its totient is φ = 133267680.

The previous prime is 149749927. The next prime is 149749969. The reversal of 149749951 is 159947941.

149749951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149749951 - 2¹³ = 149741759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149749895 and 149749904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149749981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42466 + ... + 45856.

It is an arithmetic number, because the mean of its divisors is an integer number (10447360).

Almost surely, 2^149749951 is an apocalyptic number.

149749951 is a deficient number, since it is larger than the sum of its proper divisors (17407809).

149749951 is a wasteful number, since it uses less digits than its factorization.

149749951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526.

The product of its digits is 408240, while the sum is 49.

The square root of 149749951 is about 12237.2362484345. The cubic root of 149749951 is about 531.0338795927.

The spelling of 149749951 in words is "one hundred forty-nine million, seven hundred forty-nine thousand, nine hundred fifty-one".