148193990 has 32 divisors (see below), whose sum is σ = 305363520. Its totient is φ = 50724864.

The previous prime is 148193987. The next prime is 148194023. The reversal of 148193990 is 99391841.

It is a super-2 number, since 2×148193990² = 43922917344240200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52454 + ... + 55206.

It is an arithmetic number, because the mean of its divisors is an integer number (9542610).

Almost surely, 2^148193990 is an apocalyptic number.

148193990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

148193990 is an abundant number, since it is smaller than the sum of its proper divisors (157169530).

148193990 is a wasteful number, since it uses less digits than its factorization.

148193990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 148193990 is about 12173.4953895748. The cubic root of 148193990 is about 529.1882554140.

The spelling of 148193990 in words is "one hundred forty-eight million, one hundred ninety-three thousand, nine hundred ninety".