149137780 has 48 divisors (see below), whose sum is σ = 346026240. Its totient is φ = 53539200.

The previous prime is 149137763. The next prime is 149137883. The reversal of 149137780 is 87731941.

149137780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 13090 + ... + 21670.

It is an arithmetic number, because the mean of its divisors is an integer number (7208880).

Almost surely, 2^149137780 is an apocalyptic number.

149137780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149137780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173013120).

149137780 is an abundant number, since it is smaller than the sum of its proper divisors (196888460).

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

149137780 is a wasteful number, since it uses less digits than its factorization.

149137780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8680 (or 8678 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 149137780 is about 12212.1980003601. The cubic root of 149137780 is about 530.3092771842.

The spelling of 149137780 in words is "one hundred forty-nine million, one hundred thirty-seven thousand, seven hundred eighty".