1138117451 has 2 divisors, whose sum is σ = 1138117452. Its totient is φ = 1138117450.

The previous prime is 1138117429. The next prime is 1138117457. The reversal of 1138117451 is 1547118311.

It is a strong prime.

It is an emirp because it is prime and its reverse (1547118311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138117451 is a prime.

It is a super-2 number, since 2×1138117451² = 2590622664541474802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1138117457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569058725 + 569058726.

It is an arithmetic number, because the mean of its divisors is an integer number (569058726).

Almost surely, 2^1138117451 is an apocalyptic number.

1138117451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138117451 is an equidigital number, since it uses as much as digits as its factorization.

1138117451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 32.

The square root of 1138117451 is about 33735.9963688639. The cubic root of 1138117451 is about 1044.0685827021.

The spelling of 1138117451 in words is "one billion, one hundred thirty-eight million, one hundred seventeen thousand, four hundred fifty-one".