1300002045 has 16 divisors (see below), whose sum is σ = 2080451520. Its totient is φ = 693185024.

The previous prime is 1300002043. The next prime is 1300002061. The reversal of 1300002045 is 5402000031.

It is a cyclic number.

It is not a de Polignac number, because 1300002045 - 2¹ = 1300002043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300002043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124102 + ... + 134168.

It is an arithmetic number, because the mean of its divisors is an integer number (130028220).

Almost surely, 2^1300002045 is an apocalyptic number.

1300002045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1300002045 is a deficient number, since it is larger than the sum of its proper divisors (780449475).

1300002045 is a wasteful number, since it uses less digits than its factorization.

1300002045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18684.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1300002045 is about 36055.5411136763. The cubic root of 1300002045 is about 1091.3934553425.

Adding to 1300002045 its reverse (5402000031), we get a palindrome (6702002076).

The spelling of 1300002045 in words is "one billion, three hundred million, two thousand, forty-five".