149828645987 has 4 divisors (see below), whose sum is σ = 149831253360. Its totient is φ = 149826038616.

The previous prime is 149828645983. The next prime is 149828646001. The reversal of 149828645987 is 789546828941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149828645987 - 2² = 149828645983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149828645987.

It is not an unprimeable number, because it can be changed into a prime (149828645983) 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, 1215503 + ... + 1333080.

It is an arithmetic number, because the mean of its divisors is an integer number (37457813340).

Almost surely, 2^149828645987 is an apocalyptic number.

149828645987 is a deficient number, since it is larger than the sum of its proper divisors (2607373).

149828645987 is an equidigital number, since it uses as much as digits as its factorization.

149828645987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607372.

The product of its digits is 278691840, while the sum is 71.

The spelling of 149828645987 in words is "one hundred forty-nine billion, eight hundred twenty-eight million, six hundred forty-five thousand, nine hundred eighty-seven".