1298372643 has 12 divisors (see below), whose sum is σ = 1875793920. Its totient is φ = 865412496.

The previous prime is 1298372627. The next prime is 1298372651. The reversal of 1298372643 is 3462738921.

It is not a de Polignac number, because 1298372643 - 2⁴ = 1298372627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1298372623) 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, 49630 + ... + 71132.

It is an arithmetic number, because the mean of its divisors is an integer number (156316160).

Almost surely, 2^1298372643 is an apocalyptic number.

1298372643 is a deficient number, since it is larger than the sum of its proper divisors (577421277).

1298372643 is a wasteful number, since it uses less digits than its factorization.

1298372643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28218 (or 28215 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 1298372643 is about 36032.9383064995. The cubic root of 1298372643 is about 1090.9372862732.

The spelling of 1298372643 in words is "one billion, two hundred ninety-eight million, three hundred seventy-two thousand, six hundred forty-three".