149776081 has 16 divisors (see below), whose sum is σ = 185449600. Its totient is φ = 118491984.

The previous prime is 149776079. The next prime is 149776093. The reversal of 149776081 is 180677941.

It is not a de Polignac number, because 149776081 - 2¹ = 149776079 is a prime.

It is a super-2 number, since 2×149776081² = 44865748879437122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149776061) 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, 10510 + ... + 20248.

It is an arithmetic number, because the mean of its divisors is an integer number (11590600).

Almost surely, 2^149776081 is an apocalyptic number.

It is an amenable number.

149776081 is a deficient number, since it is larger than the sum of its proper divisors (35673519).

149776081 is an frugal number, since it uses more digits than its factorization.

149776081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785 (or 9759 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 149776081 is about 12238.3038448962. The cubic root of 149776081 is about 531.0647646518.

The spelling of 149776081 in words is "one hundred forty-nine million, seven hundred seventy-six thousand, eighty-one".