2145440341 has 12 divisors (see below), whose sum is σ = 2486257920. Its totient is φ = 1835668160.

The previous prime is 2145440327. The next prime is 2145440377. The reversal of 2145440341 is 1430445412.

It is not a de Polignac number, because 2145440341 - 2¹⁷ = 2145309269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145440041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334261 + ... + 340618.

It is an arithmetic number, because the mean of its divisors is an integer number (207188160).

Almost surely, 2^2145440341 is an apocalyptic number.

It is an amenable number.

2145440341 is a deficient number, since it is larger than the sum of its proper divisors (340817579).

2145440341 is a wasteful number, since it uses less digits than its factorization.

2145440341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674924 (or 674907 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 2145440341 is about 46318.8983137553. The cubic root of 2145440341 is about 1289.7498345092.

Adding to 2145440341 its reverse (1430445412), we get a palindrome (3575885753).

The spelling of 2145440341 in words is "two billion, one hundred forty-five million, four hundred forty thousand, three hundred forty-one".