149403405586 has 4 divisors (see below), whose sum is σ = 224105108382. Its totient is φ = 74701702792.

The previous prime is 149403405581. The next prime is 149403405631. The reversal of 149403405586 is 685504304941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 685504304941 = 691 ⋅992046751.

It can be written as a sum of positive squares in only one way, i.e., 138841938225 + 10561467361 = 372615^2 + 102769^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (149403405581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37350851395 + ... + 37350851398.

Almost surely, 2^149403405586 is an apocalyptic number.

149403405586 is a deficient number, since it is larger than the sum of its proper divisors (74701702796).

149403405586 is an equidigital number, since it uses as much as digits as its factorization.

149403405586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74701702795.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 149403405586 in words is "one hundred forty-nine billion, four hundred three million, four hundred five thousand, five hundred eighty-six".