149895721940 has 12 divisors (see below), whose sum is σ = 314781016116. Its totient is φ = 59958288768.

The previous prime is 149895721931. The next prime is 149895721981. The reversal of 149895721940 is 49127598941.

It can be written as a sum of positive squares in 2 ways, for example, as 96241411984 + 53654309956 = 310228^2 + 231634^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 149895721940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3747393029 + ... + 3747393068.

It is an arithmetic number, because the mean of its divisors is an integer number (26231751343).

Almost surely, 2^149895721940 is an apocalyptic number.

149895721940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149895721940 is an abundant number, since it is smaller than the sum of its proper divisors (164885294176).

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

149895721940 is a wasteful number, since it uses less digits than its factorization.

149895721940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7494786106 (or 7494786104 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 149895721940 in words is "one hundred forty-nine billion, eight hundred ninety-five million, seven hundred twenty-one thousand, nine hundred forty".