1238981197287 has 8 divisors (see below), whose sum is σ = 1652375037040. Its totient is φ = 825787411200.

The previous prime is 1238981197273. The next prime is 1238981197291. The reversal of 1238981197287 is 7827911898321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1238981197287 - 2⁴ = 1238981197271 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 (1238981197217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49998964 + ... + 50023737.

It is an arithmetic number, because the mean of its divisors is an integer number (206546879630).

Almost surely, 2^{1238981197287} is an apocalyptic number.

1238981197287 is a deficient number, since it is larger than the sum of its proper divisors (413393839753).

1238981197287 is a wasteful number, since it uses less digits than its factorization.

1238981197287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100026833.

The product of its digits is 24385536, while the sum is 66.

The spelling of 1238981197287 in words is "one trillion, two hundred thirty-eight billion, nine hundred eighty-one million, one hundred ninety-seven thousand, two hundred eighty-seven".