2187354497 has 2 divisors, whose sum is σ = 2187354498. Its totient is φ = 2187354496.

The previous prime is 2187354443. The next prime is 2187354509. The reversal of 2187354497 is 7944537812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797844801 + 389509696 = 42401^2 + 19736^2 .

It is a cyclic number.

It is not a de Polignac number, because 2187354497 - 2¹² = 2187350401 is a prime.

It is a super-2 number, since 2×2187354497² = 9569039391092246018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2187354437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093677248 + 1093677249.

It is an arithmetic number, because the mean of its divisors is an integer number (1093677249).

Almost surely, 2^2187354497 is an apocalyptic number.

It is an amenable number.

2187354497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187354497 is an equidigital number, since it uses as much as digits as its factorization.

2187354497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 2187354497 is about 46769.1618163080. The cubic root of 2187354497 is about 1298.0947429782.

The spelling of 2187354497 in words is "two billion, one hundred eighty-seven million, three hundred fifty-four thousand, four hundred ninety-seven".