1375281897 has 16 divisors (see below), whose sum is σ = 2054476992. Its totient is φ = 810976320.

The previous prime is 1375281893. The next prime is 1375281913. The reversal of 1375281897 is 7981825731.

It is not a de Polignac number, because 1375281897 - 2² = 1375281893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1375281893) 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, 561958 + ... + 564399.

It is an arithmetic number, because the mean of its divisors is an integer number (128404812).

Almost surely, 2^1375281897 is an apocalyptic number.

It is an amenable number.

1375281897 is a deficient number, since it is larger than the sum of its proper divisors (679195095).

1375281897 is a wasteful number, since it uses less digits than its factorization.

1375281897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126408.

The product of its digits is 846720, while the sum is 51.

The square root of 1375281897 is about 37084.7933390494. The cubic root of 1375281897 is about 1112.0660320091.

The spelling of 1375281897 in words is "one billion, three hundred seventy-five million, two hundred eighty-one thousand, eight hundred ninety-seven".