1900868947 has 2 divisors, whose sum is σ = 1900868948. Its totient is φ = 1900868946.

The previous prime is 1900868941. The next prime is 1900868953. The reversal of 1900868947 is 7498680091.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1900868941) and next prime (1900868953).

It is a cyclic number.

It is not a de Polignac number, because 1900868947 - 2²³ = 1892480339 is a prime.

It is a super-2 number, since 2×1900868947² = 7226605507337777618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1900868894 and 1900868903.

It is not a weakly prime, because it can be changed into another prime (1900868941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950434473 + 950434474.

It is an arithmetic number, because the mean of its divisors is an integer number (950434474).

Almost surely, 2^1900868947 is an apocalyptic number.

1900868947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900868947 is an equidigital number, since it uses as much as digits as its factorization.

1900868947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 1900868947 is about 43598.9558017162. The cubic root of 1900868947 is about 1238.7511157691.

The spelling of 1900868947 in words is "one billion, nine hundred million, eight hundred sixty-eight thousand, nine hundred forty-seven".