149290418 has 4 divisors (see below), whose sum is σ = 223935630. Its totient is φ = 74645208.

The previous prime is 149290417. The next prime is 149290439. The reversal of 149290418 is 814092941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814092941 = 6329 ⋅128629.

It can be written as a sum of positive squares in only one way, i.e., 143448529 + 5841889 = 11977^2 + 2417^2 .

It is a super-2 number, since 2×149290418² = 44575257813229448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149290411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37322603 + ... + 37322606.

Almost surely, 2^149290418 is an apocalyptic number.

149290418 is a deficient number, since it is larger than the sum of its proper divisors (74645212).

149290418 is an equidigital number, since it uses as much as digits as its factorization.

149290418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74645211.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 149290418 is about 12218.4458095128. The cubic root of 149290418 is about 530.4901339913.

The spelling of 149290418 in words is "one hundred forty-nine million, two hundred ninety thousand, four hundred eighteen".