148995990 has 256 divisors, whose sum is σ = 496419840. Its totient is φ = 31242240.

The previous prime is 148995971. The next prime is 148996021. The reversal of 148995990 is 99599841.

148995990 is a `hidden beast` number, since 1 + 48 + 9 + 9 + 599 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 656257 + ... + 656483.

It is an arithmetic number, because the mean of its divisors is an integer number (1939140).

Almost surely, 2^148995990 is an apocalyptic number.

148995990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 148995990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248209920).

148995990 is an abundant number, since it is smaller than the sum of its proper divisors (347423850).

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

148995990 is a wasteful number, since it uses less digits than its factorization.

148995990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The square root of 148995990 is about 12206.3913586285. The cubic root of 148995990 is about 530.1411633003.

It can be divided in two parts, 1489 and 95990, that added together give a palindrome (97479).

The spelling of 148995990 in words is "one hundred forty-eight million, nine hundred ninety-five thousand, nine hundred ninety".