1995402280 has 16 divisors (see below), whose sum is σ = 4489655220. Its totient is φ = 798160896.

The previous prime is 1995402239. The next prime is 1995402281. The reversal of 1995402280 is 822045991.

It can be written as a sum of positive squares in 2 ways, for example, as 1695627684 + 299774596 = 41178^2 + 17314^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 49885057 = 1995402280 / (1 + 9 + 9 + 5 + 4 + 0 + 2 + 2 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (1995402281) 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, 24942489 + ... + 24942568.

Almost surely, 2^1995402280 is an apocalyptic number.

1995402280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1995402280 is an abundant number, since it is smaller than the sum of its proper divisors (2494252940).

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

1995402280 is a wasteful number, since it uses less digits than its factorization.

1995402280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49885068 (or 49885064 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1995402280 is about 44669.9259009907. The cubic root of 1995402280 is about 1258.9548484273.

The spelling of 1995402280 in words is "one billion, nine hundred ninety-five million, four hundred two thousand, two hundred eighty".