2190002557 has 2 divisors, whose sum is σ = 2190002558. Its totient is φ = 2190002556.

The previous prime is 2190002539. The next prime is 2190002621. The reversal of 2190002557 is 7552000912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1857523801 + 332478756 = 43099^2 + 18234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2190002557 is a prime.

It is a super-2 number, since 2×2190002557² = 9592222399333076498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190002537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095001278 + 1095001279.

It is an arithmetic number, because the mean of its divisors is an integer number (1095001279).

Almost surely, 2^2190002557 is an apocalyptic number.

It is an amenable number.

2190002557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190002557 is an equidigital number, since it uses as much as digits as its factorization.

2190002557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 2190002557 is about 46797.4631470553. The cubic root of 2190002557 is about 1298.6183658535.

The spelling of 2190002557 in words is "two billion, one hundred ninety million, two thousand, five hundred fifty-seven".