149249381457 has 64 divisors (see below), whose sum is σ = 230431703040. Its totient is φ = 84977524800.

The previous prime is 149249381453. The next prime is 149249381467. The reversal of 149249381457 is 754183942941.

It is not a de Polignac number, because 149249381457 - 2² = 149249381453 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 149249381397 and 149249381406.

It is not an unprimeable number, because it can be changed into a prime (149249381453) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51410668 + ... + 51413570.

It is an arithmetic number, because the mean of its divisors is an integer number (3600495360).

Almost surely, 2^149249381457 is an apocalyptic number.

It is an amenable number.

149249381457 is a deficient number, since it is larger than the sum of its proper divisors (81182321583).

149249381457 is a wasteful number, since it uses less digits than its factorization.

149249381457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594.

The product of its digits is 8709120, while the sum is 57.

The spelling of 149249381457 in words is "one hundred forty-nine billion, two hundred forty-nine million, three hundred eighty-one thousand, four hundred fifty-seven".