1012988117 has 2 divisors, whose sum is σ = 1012988118. Its totient is φ = 1012988116.

The previous prime is 1012988111. The next prime is 1012988131. The reversal of 1012988117 is 7118892101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1011176401 + 1811716 = 31799^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012988117 - 2⁴ = 1012988101 is a prime.

It is a super-2 number, since 2×1012988117² = 2052289850366411378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012988111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506494058 + 506494059.

It is an arithmetic number, because the mean of its divisors is an integer number (506494059).

Almost surely, 2^1012988117 is an apocalyptic number.

It is an amenable number.

1012988117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012988117 is an equidigital number, since it uses as much as digits as its factorization.

1012988117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 38.

The square root of 1012988117 is about 31827.4742478884. The cubic root of 1012988117 is about 1004.3107629542.

The spelling of 1012988117 in words is "one billion, twelve million, nine hundred eighty-eight thousand, one hundred seventeen".