1995047378 has 4 divisors (see below), whose sum is σ = 2992571070. Its totient is φ = 997523688.

The previous prime is 1995047333. The next prime is 1995047381. The reversal of 1995047378 is 8737405991.

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

It can be written as a sum of positive squares in only one way, i.e., 1648603609 + 346443769 = 40603^2 + 18613^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498761843 + ... + 498761846.

Almost surely, 2^1995047378 is an apocalyptic number.

1995047378 is a deficient number, since it is larger than the sum of its proper divisors (997523692).

1995047378 is an equidigital number, since it uses as much as digits as its factorization.

1995047378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997523691.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 1995047378 is about 44665.9532306207. The cubic root of 1995047378 is about 1258.8802048178.

The spelling of 1995047378 in words is "one billion, nine hundred ninety-five million, forty-seven thousand, three hundred seventy-eight".