1405051345 has 16 divisors (see below), whose sum is σ = 1729964880. Its totient is φ = 1094860800.

The previous prime is 1405051339. The next prime is 1405051381. The reversal of 1405051345 is 5431505041.

It can be written as a sum of positive squares in 8 ways, for example, as 288422289 + 1116629056 = 16983^2 + 33416^2 .

It is not a de Polignac number, because 1405051345 - 2⁷ = 1405051217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130321 + ... + 140689.

It is an arithmetic number, because the mean of its divisors is an integer number (108122805).

Almost surely, 2^1405051345 is an apocalyptic number.

It is an amenable number.

1405051345 is a deficient number, since it is larger than the sum of its proper divisors (324913535).

1405051345 is a wasteful number, since it uses less digits than its factorization.

1405051345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1405051345 is about 37484.0145261950. The cubic root of 1405051345 is about 1120.0327756671.

Adding to 1405051345 its reverse (5431505041), we get a palindrome (6836556386).

The spelling of 1405051345 in words is "one billion, four hundred five million, fifty-one thousand, three hundred forty-five".