1401565345 has 4 divisors (see below), whose sum is σ = 1681878420. Its totient is φ = 1121252272.

The previous prime is 1401565339. The next prime is 1401565387. The reversal of 1401565345 is 5435651041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 404774161 + 996791184 = 20119^2 + 31572^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401565345 - 2⁵ = 1401565313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401565345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140156530 + ... + 140156539.

It is an arithmetic number, because the mean of its divisors is an integer number (420469605).

Almost surely, 2^1401565345 is an apocalyptic number.

It is an amenable number.

1401565345 is a deficient number, since it is larger than the sum of its proper divisors (280313075).

1401565345 is an equidigital number, since it uses as much as digits as its factorization.

1401565345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280313074.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1401565345 is about 37437.4858263746. The cubic root of 1401565345 is about 1119.1057234855.

The spelling of 1401565345 in words is "one billion, four hundred one million, five hundred sixty-five thousand, three hundred forty-five".