149189895 has 12 divisors (see below), whose sum is σ = 258595896. Its totient is φ = 79567920.

The previous prime is 149189893. The next prime is 149189897. The reversal of 149189895 is 598981941.

It is an interprime number because it is at equal distance from previous prime (149189893) and next prime (149189897).

It is not a de Polignac number, because 149189895 - 2¹ = 149189893 is a prime.

It is a super-2 number, since 2×149189895² = 44515249540222050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149189893) 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 11 ways as a sum of consecutive naturals, for example, 1657621 + ... + 1657710.

It is an arithmetic number, because the mean of its divisors is an integer number (21549658).

Almost surely, 2^149189895 is an apocalyptic number.

149189895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149189895 is a deficient number, since it is larger than the sum of its proper divisors (109406001).

149189895 is a wasteful number, since it uses less digits than its factorization.

149189895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315342 (or 3315339 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 149189895 is about 12214.3315412674. The cubic root of 149189895 is about 530.3710407638.

The spelling of 149189895 in words is "one hundred forty-nine million, one hundred eighty-nine thousand, eight hundred ninety-five".