149931801 has 12 divisors (see below), whose sum is σ = 217898928. Its totient is φ = 99340344.

The previous prime is 149931797. The next prime is 149931811. The reversal of 149931801 is 108139941.

It is not a de Polignac number, because 149931801 - 2² = 149931797 is a prime.

It is a super-2 number, since 2×149931801² = 44959089902207202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149931811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49635 + ... + 52568.

It is an arithmetic number, because the mean of its divisors is an integer number (18158244).

Almost surely, 2^149931801 is an apocalyptic number.

It is an amenable number.

149931801 is a deficient number, since it is larger than the sum of its proper divisors (67967127).

149931801 is a wasteful number, since it uses less digits than its factorization.

149931801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102372 (or 102369 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 149931801 is about 12244.6641848603. The cubic root of 149931801 is about 531.2487476603.

The spelling of 149931801 in words is "one hundred forty-nine million, nine hundred thirty-one thousand, eight hundred one".