1493400565 has 8 divisors (see below), whose sum is σ = 1792323000. Its totient is φ = 1194558912.

The previous prime is 1493400563. The next prime is 1493400569. The reversal of 1493400565 is 5650043941.

It can be written as a sum of positive squares in 4 ways, for example, as 234641124 + 1258759441 = 15318^2 + 35479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1493400565 - 2¹ = 1493400563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493400563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33427 + ... + 64063.

It is an arithmetic number, because the mean of its divisors is an integer number (224040375).

Almost surely, 2^1493400565 is an apocalyptic number.

It is an amenable number.

1493400565 is a deficient number, since it is larger than the sum of its proper divisors (298922435).

1493400565 is an equidigital number, since it uses as much as digits as its factorization.

1493400565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40391.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1493400565 is about 38644.5412057124. The cubic root of 1493400565 is about 1143.0330040348.

The spelling of 1493400565 in words is "one billion, four hundred ninety-three million, four hundred thousand, five hundred sixty-five".