149797918 has 8 divisors (see below), whose sum is σ = 224805312. Its totient is φ = 74862816.

The previous prime is 149797913. The next prime is 149797933. The reversal of 149797918 is 819797941.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149797913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12555 + ... + 21382.

It is an arithmetic number, because the mean of its divisors is an integer number (28100664).

Almost surely, 2^149797918 is an apocalyptic number.

149797918 is a deficient number, since it is larger than the sum of its proper divisors (75007394).

149797918 is a wasteful number, since it uses less digits than its factorization.

149797918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36146.

The product of its digits is 1143072, while the sum is 55.

The square root of 149797918 is about 12239.1959703242. The cubic root of 149797918 is about 531.0905727284.

The spelling of 149797918 in words is "one hundred forty-nine million, seven hundred ninety-seven thousand, nine hundred eighteen".