2120653387 has 2 divisors, whose sum is σ = 2120653388. Its totient is φ = 2120653386.

The previous prime is 2120653357. The next prime is 2120653397. The reversal of 2120653387 is 7833560212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120653387 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120653357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060326693 + 1060326694.

It is an arithmetic number, because the mean of its divisors is an integer number (1060326694).

Almost surely, 2^2120653387 is an apocalyptic number.

2120653387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120653387 is an equidigital number, since it uses as much as digits as its factorization.

2120653387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 2120653387 is about 46050.5525156865. The cubic root of 2120653387 is about 1284.7636192548.

The spelling of 2120653387 in words is "two billion, one hundred twenty million, six hundred fifty-three thousand, three hundred eighty-seven".