149648569 has 16 divisors (see below), whose sum is σ = 182894976. Its totient is φ = 119520000.

The previous prime is 149648567. The next prime is 149648573. The reversal of 149648569 is 965846941.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 149648569 - 2¹ = 149648567 is a prime.

It is a super-2 number, since 2×149648569² = 44789388407495522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149648567) 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, 5794 + ... + 18244.

It is an arithmetic number, because the mean of its divisors is an integer number (11430936).

Almost surely, 2^149648569 is an apocalyptic number.

It is an amenable number.

149648569 is a deficient number, since it is larger than the sum of its proper divisors (33246407).

149648569 is a wasteful number, since it uses less digits than its factorization.

149648569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12576.

The product of its digits is 1866240, while the sum is 52.

The square root of 149648569 is about 12233.0931901952. The cubic root of 149648569 is about 530.9140143764.

The spelling of 149648569 in words is "one hundred forty-nine million, six hundred forty-eight thousand, five hundred sixty-nine".