149249381538 has 32 divisors (see below), whose sum is σ = 306273522240. Its totient is φ = 48457923840.

The previous prime is 149249381467. The next prime is 149249381539. The reversal of 149249381538 is 835183942941.

It is not an unprimeable number, because it can be changed into a prime (149249381539) 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, 337795 + ... + 642342.

It is an arithmetic number, because the mean of its divisors is an integer number (9571047570).

Almost surely, 2^149249381538 is an apocalyptic number.

149249381538 is an abundant number, since it is smaller than the sum of its proper divisors (157024140702).

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

149249381538 is a wasteful number, since it uses less digits than its factorization.

149249381538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980802.

The product of its digits is 7464960, while the sum is 57.

The spelling of 149249381538 in words is "one hundred forty-nine billion, two hundred forty-nine million, three hundred eighty-one thousand, five hundred thirty-eight".