2154124699 has 2 divisors, whose sum is σ = 2154124700. Its totient is φ = 2154124698.

The previous prime is 2154124697. The next prime is 2154124733. The reversal of 2154124699 is 9964214512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154124699 - 2¹ = 2154124697 is a prime.

Together with 2154124697, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2154124691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077062349 + 1077062350.

It is an arithmetic number, because the mean of its divisors is an integer number (1077062350).

Almost surely, 2^2154124699 is an apocalyptic number.

2154124699 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154124699 is an equidigital number, since it uses as much as digits as its factorization.

2154124699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 2154124699 is about 46412.5489388377. The cubic root of 2154124699 is about 1291.4877171299.

The spelling of 2154124699 in words is "two billion, one hundred fifty-four million, one hundred twenty-four thousand, six hundred ninety-nine".