3798981947 has 2 divisors, whose sum is σ = 3798981948. Its totient is φ = 3798981946.

The previous prime is 3798981943. The next prime is 3798982001. The reversal of 3798981947 is 7491898973.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3798981947 - 2² = 3798981943 is a prime.

It is not a weakly prime, because it can be changed into another prime (3798981943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1899490973 + 1899490974.

It is an arithmetic number, because the mean of its divisors is an integer number (1899490974).

Almost surely, 2^3798981947 is an apocalyptic number.

3798981947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3798981947 is an equidigital number, since it uses as much as digits as its factorization.

3798981947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 65.

The square root of 3798981947 is about 61635.8819763293. The cubic root of 3798981947 is about 1560.3513819199.

The spelling of 3798981947 in words is "three billion, seven hundred ninety-eight million, nine hundred eighty-one thousand, nine hundred forty-seven".