149793491481 has 16 divisors (see below), whose sum is σ = 200491656960. Its totient is φ = 99478938240.

The previous prime is 149793491473. The next prime is 149793491489. The reversal of 149793491481 is 184194397941.

It is an interprime number because it is at equal distance from previous prime (149793491473) and next prime (149793491489).

It is not a de Polignac number, because 149793491481 - 2³ = 149793491473 is a prime.

It is a super-2 number, since 2×149793491481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149793491489) 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, 9221875 + ... + 9238103.

It is an arithmetic number, because the mean of its divisors is an integer number (12530728560).

Almost surely, 2^149793491481 is an apocalyptic number.

It is an amenable number.

149793491481 is a deficient number, since it is larger than the sum of its proper divisors (50698165479).

149793491481 is a wasteful number, since it uses less digits than its factorization.

149793491481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27856.

The product of its digits is 7838208, while the sum is 60.

The spelling of 149793491481 in words is "one hundred forty-nine billion, seven hundred ninety-three million, four hundred ninety-one thousand, four hundred eighty-one".