3619472981 has 2 divisors, whose sum is σ = 3619472982. Its totient is φ = 3619472980.

The previous prime is 3619472971. The next prime is 3619472999. The reversal of 3619472981 is 1892749163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2536733956 + 1082739025 = 50366^2 + 32905^2 .

It is a cyclic number.

It is not a de Polignac number, because 3619472981 - 2¹⁴ = 3619456597 is a prime.

It is a super-2 number, since 2×3619472981² = 26201169320378052722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3619472911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1809736490 + 1809736491.

It is an arithmetic number, because the mean of its divisors is an integer number (1809736491).

Almost surely, 2^3619472981 is an apocalyptic number.

It is an amenable number.

3619472981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3619472981 is an equidigital number, since it uses as much as digits as its factorization.

3619472981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 3619472981 is about 60162.0559904663. The cubic root of 3619472981 is about 1535.3772914202.

The spelling of 3619472981 in words is "three billion, six hundred nineteen million, four hundred seventy-two thousand, nine hundred eighty-one".