1380625019 has 2 divisors, whose sum is σ = 1380625020. Its totient is φ = 1380625018.

The previous prime is 1380625009. The next prime is 1380625109. The reversal of 1380625019 is 9105260831.

Together with next prime (1380625109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380625019 - 2⁴ = 1380625003 is a prime.

It is a super-2 number, since 2×1380625019² = 3812250886177500722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1380625019.

It is not a weakly prime, because it can be changed into another prime (1380625009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690312509 + 690312510.

It is an arithmetic number, because the mean of its divisors is an integer number (690312510).

Almost surely, 2^1380625019 is an apocalyptic number.

1380625019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380625019 is an equidigital number, since it uses as much as digits as its factorization.

1380625019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1380625019 is about 37156.7627626520. The cubic root of 1380625019 is about 1113.5043373910.

The spelling of 1380625019 in words is "one billion, three hundred eighty million, six hundred twenty-five thousand, nineteen".