149109380 has 192 divisors, whose sum is σ = 408748032. Its totient is φ = 44513280.

The previous prime is 149109341. The next prime is 149109407. The reversal of 149109380 is 83901941.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 149109380.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3172517 + ... + 3172563.

It is an arithmetic number, because the mean of its divisors is an integer number (2128896).

Almost surely, 2^149109380 is an apocalyptic number.

149109380 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 149109380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204374016).

149109380 is an abundant number, since it is smaller than the sum of its proper divisors (259638652).

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

149109380 is a wasteful number, since it uses less digits than its factorization.

149109380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 149109380 is about 12211.0351731538. The cubic root of 149109380 is about 530.2756131465.

The spelling of 149109380 in words is "one hundred forty-nine million, one hundred nine thousand, three hundred eighty".