149491745291 has 8 divisors (see below), whose sum is σ = 172151890944. Its totient is φ = 127157645160.

The previous prime is 149491745281. The next prime is 149491745341. The reversal of 149491745291 is 192547194941.

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

It is not a de Polignac number, because 149491745291 - 2¹⁰ = 149491744267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149491745281) 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, 81510395 + ... + 81512228.

It is an arithmetic number, because the mean of its divisors is an integer number (21518986368).

Almost surely, 2^149491745291 is an apocalyptic number.

149491745291 is a deficient number, since it is larger than the sum of its proper divisors (22660145653).

149491745291 is a wasteful number, since it uses less digits than its factorization.

149491745291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163022761.

The product of its digits is 3265920, while the sum is 56.

The spelling of 149491745291 in words is "one hundred forty-nine billion, four hundred ninety-one million, seven hundred forty-five thousand, two hundred ninety-one".