9401281345 has 16 divisors (see below), whose sum is σ = 11869049808. Its totient is φ = 7139266560.

The previous prime is 9401281327. The next prime is 9401281369. The reversal of 9401281345 is 5431821049.

It can be written as a sum of positive squares in 8 ways, for example, as 815409 + 9400465936 = 903^2 + 96956^2 .

It is not a de Polignac number, because 9401281345 - 2³¹ = 7253797697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612144 + ... + 627313.

It is an arithmetic number, because the mean of its divisors is an integer number (741815613).

Almost surely, 2^9401281345 is an apocalyptic number.

It is an amenable number.

9401281345 is a deficient number, since it is larger than the sum of its proper divisors (2467768463).

9401281345 is a wasteful number, since it uses less digits than its factorization.

9401281345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239540.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 9401281345 is about 96960.2049554352. The cubic root of 9401281345 is about 2110.5501844616.

The spelling of 9401281345 in words is "nine billion, four hundred one million, two hundred eighty-one thousand, three hundred forty-five".