149146561 has 8 divisors (see below), whose sum is σ = 160826400. Its totient is φ = 137849760.

The previous prime is 149146541. The next prime is 149146573. The reversal of 149146561 is 165641941.

149146561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149146561 - 2¹⁹ = 148622273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149146561.

It is not an unprimeable number, because it can be changed into a prime (149146541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94951 + ... + 96508.

It is an arithmetic number, because the mean of its divisors is an integer number (20103300).

Almost surely, 2^149146561 is an apocalyptic number.

It is an amenable number.

149146561 is a deficient number, since it is larger than the sum of its proper divisors (11679839).

149146561 is a wasteful number, since it uses less digits than its factorization.

149146561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191519.

The product of its digits is 25920, while the sum is 37.

The square root of 149146561 is about 12212.5575126588. The cubic root of 149146561 is about 530.3196849078.

The spelling of 149146561 in words is "one hundred forty-nine million, one hundred forty-six thousand, five hundred sixty-one".