1409019643 has 2 divisors, whose sum is σ = 1409019644. Its totient is φ = 1409019642.

The previous prime is 1409019641. The next prime is 1409019679. The reversal of 1409019643 is 3469109041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1409019643 - 2¹ = 1409019641 is a prime.

Together with 1409019641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1409019641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704509821 + 704509822.

It is an arithmetic number, because the mean of its divisors is an integer number (704509822).

Almost surely, 2^1409019643 is an apocalyptic number.

1409019643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409019643 is an equidigital number, since it uses as much as digits as its factorization.

1409019643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1409019643 is about 37536.9104082901. The cubic root of 1409019643 is about 1121.0862237762.

It can be divided in two parts, 140901 and 9643, that added together give a square (150544 = 388²).

The spelling of 1409019643 in words is "one billion, four hundred nine million, nineteen thousand, six hundred forty-three".