149678881 has 8 divisors (see below), whose sum is σ = 168553728. Its totient is φ = 131682000.

The previous prime is 149678861. The next prime is 149678899. The reversal of 149678881 is 188876941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149678881 - 2¹¹ = 149676833 is a prime.

It is a super-2 number, since 2×149678881² = 44807534834824322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149678821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219130 + ... + 219811.

It is an arithmetic number, because the mean of its divisors is an integer number (21069216).

Almost surely, 2^149678881 is an apocalyptic number.

149678881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

149678881 is a deficient number, since it is larger than the sum of its proper divisors (18874847).

149678881 is a wasteful number, since it uses less digits than its factorization.

149678881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438983.

The product of its digits is 774144, while the sum is 52.

The square root of 149678881 is about 12234.3320618659. The cubic root of 149678881 is about 530.9498583079.

The spelling of 149678881 in words is "one hundred forty-nine million, six hundred seventy-eight thousand, eight hundred eighty-one".