149025619 has 2 divisors, whose sum is σ = 149025620. Its totient is φ = 149025618.

The previous prime is 149025599. The next prime is 149025629. The reversal of 149025619 is 916520941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149025619 - 2¹⁷ = 148894547 is a prime.

It is a super-2 number, since 2×149025619² = 44417270236666322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149025629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74512809 + 74512810.

It is an arithmetic number, because the mean of its divisors is an integer number (74512810).

Almost surely, 2^149025619 is an apocalyptic number.

149025619 is a deficient number, since it is larger than the sum of its proper divisors (1).

149025619 is an equidigital number, since it uses as much as digits as its factorization.

149025619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 149025619 is about 12207.6049657580. The cubic root of 149025619 is about 530.1763018555.

The spelling of 149025619 in words is "one hundred forty-nine million, twenty-five thousand, six hundred nineteen".