2420051989 has 2 divisors, whose sum is σ = 2420051990. Its totient is φ = 2420051988.

The previous prime is 2420051923. The next prime is 2420052031. The reversal of 2420051989 is 9891500242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2131391889 + 288660100 = 46167^2 + 16990^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420051989 - 2²³ = 2411663381 is a prime.

It is a super-2 number, since 2×2420051989² = 11713303258925712242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2420051089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210025994 + 1210025995.

It is an arithmetic number, because the mean of its divisors is an integer number (1210025995).

Almost surely, 2^2420051989 is an apocalyptic number.

It is an amenable number.

2420051989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420051989 is an equidigital number, since it uses as much as digits as its factorization.

2420051989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 2420051989 is about 49194.0239155123. The cubic root of 2420051989 is about 1342.5843030517.

The spelling of 2420051989 in words is "two billion, four hundred twenty million, fifty-one thousand, nine hundred eighty-nine".