149749968 has 80 divisors (see below), whose sum is σ = 403099200. Its totient is φ = 47846400.

The previous prime is 149749927. The next prime is 149749969. The reversal of 149749968 is 869947941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149749969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248868 + ... + 249468.

It is an arithmetic number, because the mean of its divisors is an integer number (5038740).

Almost surely, 2^149749968 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 149749968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201549600).

149749968 is an abundant number, since it is smaller than the sum of its proper divisors (253349232).

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

149749968 is a wasteful number, since it uses less digits than its factorization.

149749968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 814 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The square root of 149749968 is about 12237.2369430358. The cubic root of 149749968 is about 531.0338996874.

It can be divided in two parts, 14974 and 9968, that added together give a palindrome (24942).

The spelling of 149749968 in words is "one hundred forty-nine million, seven hundred forty-nine thousand, nine hundred sixty-eight".