2043761939 has 2 divisors, whose sum is σ = 2043761940. Its totient is φ = 2043761938.

The previous prime is 2043761861. The next prime is 2043761963. The reversal of 2043761939 is 9391673402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043761939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2043761939.

It is not a weakly prime, because it can be changed into another prime (2043761639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021880969 + 1021880970.

It is an arithmetic number, because the mean of its divisors is an integer number (1021880970).

Almost surely, 2^2043761939 is an apocalyptic number.

2043761939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043761939 is an equidigital number, since it uses as much as digits as its factorization.

2043761939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 2043761939 is about 45207.9853455117. The cubic root of 2043761939 is about 1269.0442597534.

The spelling of 2043761939 in words is "two billion, forty-three million, seven hundred sixty-one thousand, nine hundred thirty-nine".