149949187 has 8 divisors (see below), whose sum is σ = 151129440. Its totient is φ = 148774080.

The previous prime is 149949181. The next prime is 149949193. The reversal of 149949187 is 781949941.

It is an interprime number because it is at equal distance from previous prime (149949181) and next prime (149949193).

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 149949187 - 2¹⁵ = 149916419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149949181) 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, 72889 + ... + 74917.

It is an arithmetic number, because the mean of its divisors is an integer number (18891180).

Almost surely, 2^149949187 is an apocalyptic number.

149949187 is a deficient number, since it is larger than the sum of its proper divisors (1180253).

149949187 is a wasteful number, since it uses less digits than its factorization.

149949187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573.

The product of its digits is 653184, while the sum is 52.

The square root of 149949187 is about 12245.3741061676. The cubic root of 149949187 is about 531.2692812933.

The spelling of 149949187 in words is "one hundred forty-nine million, nine hundred forty-nine thousand, one hundred eighty-seven".