149021790 has 32 divisors (see below), whose sum is σ = 358313760. Its totient is φ = 39665664.

The previous prime is 149021777. The next prime is 149021809. The reversal of 149021790 is 97120941.

149021790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×149021790³ (a number of 25 digits) contains 333 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, 13006 + ... + 21614.

It is an arithmetic number, because the mean of its divisors is an integer number (11197305).

Almost surely, 2^149021790 is an apocalyptic number.

149021790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149021790 is an abundant number, since it is smaller than the sum of its proper divisors (209291970).

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

149021790 is a wasteful number, since it uses less digits than its factorization.

149021790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9196.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 149021790 is about 12207.4481362814. The cubic root of 149021790 is about 530.1717611095.

The spelling of 149021790 in words is "one hundred forty-nine million, twenty-one thousand, seven hundred ninety".