149951490 has 128 divisors (see below), whose sum is σ = 411747840. Its totient is φ = 34670592.

The previous prime is 149951453. The next prime is 149951497. The reversal of 149951490 is 94159941.

It is a happy number.

149951490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (149951497) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 654696 + ... + 654924.

It is an arithmetic number, because the mean of its divisors is an integer number (3216780).

Almost surely, 2^149951490 is an apocalyptic number.

149951490 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 149951490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205873920).

149951490 is an abundant number, since it is smaller than the sum of its proper divisors (261796350).

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

149951490 is a wasteful number, since it uses less digits than its factorization.

149951490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 149951490 is about 12245.4681413166. The cubic root of 149951490 is about 531.2720011188.

The spelling of 149951490 in words is "one hundred forty-nine million, nine hundred fifty-one thousand, four hundred ninety".