149826657 has 4 divisors (see below), whose sum is σ = 199768880. Its totient is φ = 99884436.

The previous prime is 149826641. The next prime is 149826667. The reversal of 149826657 is 756628941.

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 not a de Polignac number, because 149826657 - 2⁴ = 149826641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149826617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24971107 + ... + 24971112.

It is an arithmetic number, because the mean of its divisors is an integer number (49942220).

Almost surely, 2^149826657 is an apocalyptic number.

It is an amenable number.

149826657 is a deficient number, since it is larger than the sum of its proper divisors (49942223).

149826657 is an equidigital number, since it uses as much as digits as its factorization.

149826657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49942222.

The product of its digits is 725760, while the sum is 48.

The square root of 149826657 is about 12240.3699698988. The cubic root of 149826657 is about 531.1245341172.

Adding to 149826657 its sum of digits (48), we get a triangular number (149826705 = T₁₇₃₁₀).

The spelling of 149826657 in words is "one hundred forty-nine million, eight hundred twenty-six thousand, six hundred fifty-seven".