149491164 has 96 divisors (see below), whose sum is σ = 381024000. Its totient is φ = 45467136.

The previous prime is 149491163. The next prime is 149491171. The reversal of 149491164 is 461194941.

149491164 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-2 number, since 2×149491164² = 44695216228149792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149491163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1075407 + ... + 1075545.

It is an arithmetic number, because the mean of its divisors is an integer number (3969000).

Almost surely, 2^149491164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149491164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190512000).

149491164 is an abundant number, since it is smaller than the sum of its proper divisors (231532836).

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

149491164 is a wasteful number, since it uses less digits than its factorization.

149491164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 305 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 149491164 is about 12226.6579243880. The cubic root of 149491164 is about 530.7278051394.

The spelling of 149491164 in words is "one hundred forty-nine million, four hundred ninety-one thousand, one hundred sixty-four".