1380724493 has 2 divisors, whose sum is σ = 1380724494. Its totient is φ = 1380724492.

The previous prime is 1380724421. The next prime is 1380724529. The reversal of 1380724493 is 3944270831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 921608164 + 459116329 = 30358^2 + 21427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380724493 - 2²⁰ = 1379675917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1380724493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380726493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690362246 + 690362247.

It is an arithmetic number, because the mean of its divisors is an integer number (690362247).

Almost surely, 2^1380724493 is an apocalyptic number.

It is an amenable number.

1380724493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380724493 is an equidigital number, since it uses as much as digits as its factorization.

1380724493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1380724493 is about 37158.1013104814. The cubic root of 1380724493 is about 1113.5310794024.

The spelling of 1380724493 in words is "one billion, three hundred eighty million, seven hundred twenty-four thousand, four hundred ninety-three".