149801982 has 64 divisors (see below), whose sum is σ = 339959808. Its totient is φ = 43596000.

The previous prime is 149801963. The next prime is 149801983. The reversal of 149801982 is 289108941.

149801982 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×149801982² = 44881267622256648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149801983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431533 + ... + 431879.

It is an arithmetic number, because the mean of its divisors is an integer number (5311872).

Almost surely, 2^149801982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149801982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169979904).

149801982 is an abundant number, since it is smaller than the sum of its proper divisors (190157826).

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

149801982 is a wasteful number, since it uses less digits than its factorization.

149801982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 149801982 is about 12239.3619931760. The cubic root of 149801982 is about 531.0953754933.

The spelling of 149801982 in words is "one hundred forty-nine million, eight hundred one thousand, nine hundred eighty-two".