2042623949 has 2 divisors, whose sum is σ = 2042623950. Its totient is φ = 2042623948.

The previous prime is 2042623939. The next prime is 2042624029. The reversal of 2042623949 is 9493262402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1619499049 + 423124900 = 40243^2 + 20570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042623949 - 2²⁴ = 2025846733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042623939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021311974 + 1021311975.

It is an arithmetic number, because the mean of its divisors is an integer number (1021311975).

Almost surely, 2^2042623949 is an apocalyptic number.

It is an amenable number.

2042623949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042623949 is an equidigital number, since it uses as much as digits as its factorization.

2042623949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 2042623949 is about 45195.3974315969. The cubic root of 2042623949 is about 1268.8086765748.

The spelling of 2042623949 in words is "two billion, forty-two million, six hundred twenty-three thousand, nine hundred forty-nine".