1238293287 has 48 divisors (see below), whose sum is σ = 2233550592. Its totient is φ = 642245760.

The previous prime is 1238293283. The next prime is 1238293333. The reversal of 1238293287 is 7823928321.

It is not a de Polignac number, because 1238293287 - 2² = 1238293283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238293283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 648388 + ... + 650294.

It is an arithmetic number, because the mean of its divisors is an integer number (46532304).

Almost surely, 2^1238293287 is an apocalyptic number.

1238293287 is a deficient number, since it is larger than the sum of its proper divisors (995257305).

1238293287 is a wasteful number, since it uses less digits than its factorization.

1238293287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 2865 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 1238293287 is about 35189.3916827217. The cubic root of 1238293287 is about 1073.8439454710.

The spelling of 1238293287 in words is "one billion, two hundred thirty-eight million, two hundred ninety-three thousand, two hundred eighty-seven".