148915890 has 48 divisors (see below), whose sum is σ = 387878400. Its totient is φ = 39639456.

The previous prime is 148915889. The next prime is 148915931. The reversal of 148915890 is 98519841.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65391 + ... + 67629.

It is an arithmetic number, because the mean of its divisors is an integer number (8080800).

Almost surely, 2^148915890 is an apocalyptic number.

148915890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

148915890 is an abundant number, since it is smaller than the sum of its proper divisors (238962510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

148915890 is a wasteful number, since it uses less digits than its factorization.

148915890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 148915890 is about 12203.1098495425. The cubic root of 148915890 is about 530.0461452642.

The spelling of 148915890 in words is "one hundred forty-eight million, nine hundred fifteen thousand, eight hundred ninety".