149249381397 has 16 divisors (see below), whose sum is σ = 214811706240. Its totient is φ = 91891671872.

The previous prime is 149249381389. The next prime is 149249381429. The reversal of 149249381397 is 793183942941.

It is a cyclic number.

It is not a de Polignac number, because 149249381397 - 2³ = 149249381389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149249381397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149249381327) 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, 37291698 + ... + 37295699.

It is an arithmetic number, because the mean of its divisors is an integer number (13425731640).

Almost surely, 2^149249381397 is an apocalyptic number.

It is an amenable number.

149249381397 is a deficient number, since it is larger than the sum of its proper divisors (65562324843).

149249381397 is a wasteful number, since it uses less digits than its factorization.

149249381397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74587452.

The product of its digits is 11757312, while the sum is 60.

The spelling of 149249381397 in words is "one hundred forty-nine billion, two hundred forty-nine million, three hundred eighty-one thousand, three hundred ninety-seven".