149868549 has 64 divisors (see below), whose sum is σ = 247968000. Its totient is φ = 90139392.

The previous prime is 149868541. The next prime is 149868581. The reversal of 149868549 is 945868941.

149868549 is a `hidden beast` number, since 1 + 4 + 98 + 6 + 8 + 549 = 666.

It is not a de Polignac number, because 149868549 - 2³ = 149868541 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 149868495 and 149868504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149868541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1078122 + ... + 1078260.

It is an arithmetic number, because the mean of its divisors is an integer number (3874500).

Almost surely, 2^149868549 is an apocalyptic number.

It is an amenable number.

149868549 is a deficient number, since it is larger than the sum of its proper divisors (98099451).

149868549 is an equidigital number, since it uses as much as digits as its factorization.

149868549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 188 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 149868549 is about 12242.0810730856. The cubic root of 149868549 is about 531.1740308624.

The spelling of 149868549 in words is "one hundred forty-nine million, eight hundred sixty-eight thousand, five hundred forty-nine".