1630149187 has 8 divisors (see below), whose sum is σ = 1663063920. Its totient is φ = 1597559040.

The previous prime is 1630149139. The next prime is 1630149233. The reversal of 1630149187 is 7819410361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1630149187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630143187) 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, 70989 + ... + 91102.

It is an arithmetic number, because the mean of its divisors is an integer number (207882990).

Almost surely, 2^1630149187 is an apocalyptic number.

1630149187 is a deficient number, since it is larger than the sum of its proper divisors (32914733).

1630149187 is a wasteful number, since it uses less digits than its factorization.

1630149187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162293.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1630149187 is about 40375.1060308205. The cubic root of 1630149187 is about 1176.9078255059.

The spelling of 1630149187 in words is "one billion, six hundred thirty million, one hundred forty-nine thousand, one hundred eighty-seven".