149681086 has 4 divisors (see below), whose sum is σ = 224521632. Its totient is φ = 74840542.

The previous prime is 149681083. The next prime is 149681137. The reversal of 149681086 is 680186941.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×149681086² = 44808855012278792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149681083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37420270 + ... + 37420273.

It is an arithmetic number, because the mean of its divisors is an integer number (56130408).

Almost surely, 2^149681086 is an apocalyptic number.

149681086 is a deficient number, since it is larger than the sum of its proper divisors (74840546).

149681086 is an equidigital number, since it uses as much as digits as its factorization.

149681086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74840545.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 149681086 is about 12234.4221767928. The cubic root of 149681086 is about 530.9524655309.

The spelling of 149681086 in words is "one hundred forty-nine million, six hundred eighty-one thousand, eighty-six".