149195515 has 16 divisors (see below), whose sum is σ = 209603520. Its totient is φ = 99809280.

The previous prime is 149195513. The next prime is 149195539. The reversal of 149195515 is 515591941.

It is not a de Polignac number, because 149195515 - 2¹ = 149195513 is a prime.

It is a super-2 number, since 2×149195515² = 44518603392230450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149195513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50550 + ... + 53419.

It is an arithmetic number, because the mean of its divisors is an integer number (13100220).

Almost surely, 2^149195515 is an apocalyptic number.

149195515 is a deficient number, since it is larger than the sum of its proper divisors (60408005).

149195515 is a wasteful number, since it uses less digits than its factorization.

149195515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104022.

The product of its digits is 40500, while the sum is 40.

The square root of 149195515 is about 12214.5615967173. The cubic root of 149195515 is about 530.3777003923.

The spelling of 149195515 in words is "one hundred forty-nine million, one hundred ninety-five thousand, five hundred fifteen".