7268986981 has 16 divisors (see below), whose sum is σ = 7740441088. Its totient is φ = 6815793600.

The previous prime is 7268986951. The next prime is 7268986993. The reversal of 7268986981 is 1896898627.

It is a cyclic number.

It is not a de Polignac number, because 7268986981 - 2⁹ = 7268986469 is a prime.

It is a super-2 number, since 2×7268986981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7268986951) 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, 98011 + ... + 155383.

It is an arithmetic number, because the mean of its divisors is an integer number (483777568).

Almost surely, 2^7268986981 is an apocalyptic number.

It is an amenable number.

7268986981 is a deficient number, since it is larger than the sum of its proper divisors (471454107).

7268986981 is a wasteful number, since it uses less digits than its factorization.

7268986981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57532.

The product of its digits is 20901888, while the sum is 64.

The square root of 7268986981 is about 85258.3543179201. The cubic root of 7268986981 is about 1937.1264167456.

The spelling of 7268986981 in words is "seven billion, two hundred sixty-eight million, nine hundred eighty-six thousand, nine hundred eighty-one".