149541619 has 2 divisors, whose sum is σ = 149541620. Its totient is φ = 149541618.

The previous prime is 149541599. The next prime is 149541641. The reversal of 149541619 is 916145941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149541619 - 2¹³ = 149533427 is a prime.

It is a super-2 number, since 2×149541619² = 44725391626282322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149541649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74770809 + 74770810.

It is an arithmetic number, because the mean of its divisors is an integer number (74770810).

Almost surely, 2^149541619 is an apocalyptic number.

149541619 is a deficient number, since it is larger than the sum of its proper divisors (1).

149541619 is an equidigital number, since it uses as much as digits as its factorization.

149541619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The square root of 149541619 is about 12228.7210696785. The cubic root of 149541619 is about 530.7875073511.

The spelling of 149541619 in words is "one hundred forty-nine million, five hundred forty-one thousand, six hundred nineteen".