149744761 has 4 divisors (see below), whose sum is σ = 149772672. Its totient is φ = 149716852.

The previous prime is 149744753. The next prime is 149744767. The reversal of 149744761 is 167447941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149744761 - 2³ = 149744753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149744767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3085 + ... + 17578.

It is an arithmetic number, because the mean of its divisors is an integer number (37443168).

Almost surely, 2^149744761 is an apocalyptic number.

It is an amenable number.

149744761 is a deficient number, since it is larger than the sum of its proper divisors (27911).

149744761 is an equidigital number, since it uses as much as digits as its factorization.

149744761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27910.

The product of its digits is 169344, while the sum is 43.

The square root of 149744761 is about 12237.0241889113. The cubic root of 149744761 is about 531.0277447043.

The spelling of 149744761 in words is "one hundred forty-nine million, seven hundred forty-four thousand, seven hundred sixty-one".