1995147690 has 32 divisors (see below), whose sum is σ = 4789639296. Its totient is φ = 531896640.

The previous prime is 1995147689. The next prime is 1995147709. The reversal of 1995147690 is 967415991.

It is a super-2 number, since 2×1995147690² = 7961228609824672200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152820 + ... + 165360.

It is an arithmetic number, because the mean of its divisors is an integer number (149676228).

Almost surely, 2^1995147690 is an apocalyptic number.

1995147690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1995147690 is an abundant number, since it is smaller than the sum of its proper divisors (2794491606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1995147690 is a wasteful number, since it uses less digits than its factorization.

1995147690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17854.

The product of its (nonzero) digits is 612360, while the sum is 51.

The square root of 1995147690 is about 44667.0761299640. The cubic root of 1995147690 is about 1258.9013035105.

The spelling of 1995147690 in words is "one billion, nine hundred ninety-five million, one hundred forty-seven thousand, six hundred ninety".