2981387237693 has 16 divisors (see below), whose sum is σ = 3016500258816. Its totient is φ = 2946506337600.

The previous prime is 2981387237681. The next prime is 2981387237749. The reversal of 2981387237693 is 3967327831892.

It is a cyclic number.

It is not a de Polignac number, because 2981387237693 - 2¹⁰ = 2981387236669 is a prime.

It is a super-2 number, since 2×2981387237693² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981387237993) 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, 39189230 + ... + 39265232.

It is an arithmetic number, because the mean of its divisors is an integer number (188531266176).

Almost surely, 2^{2981387237693} is an apocalyptic number.

It is an amenable number.

2981387237693 is a deficient number, since it is larger than the sum of its proper divisors (35113021123).

2981387237693 is a wasteful number, since it uses less digits than its factorization.

2981387237693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77524.

The product of its digits is 164602368, while the sum is 68.

The spelling of 2981387237693 in words is "two trillion, nine hundred eighty-one billion, three hundred eighty-seven million, two hundred thirty-seven thousand, six hundred ninety-three".