1138917037 has 2 divisors, whose sum is σ = 1138917038. Its totient is φ = 1138917036.

The previous prime is 1138917007. The next prime is 1138917067. The reversal of 1138917037 is 7307198311.

It is the 13778-th star number.

It is a balanced prime because it is at equal distance from previous prime (1138917007) and next prime (1138917067).

It can be written as a sum of positive squares in only one way, i.e., 991683081 + 147233956 = 31491^2 + 12134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138917037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138917007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569458518 + 569458519.

It is an arithmetic number, because the mean of its divisors is an integer number (569458519).

Almost surely, 2^1138917037 is an apocalyptic number.

It is an amenable number.

1138917037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138917037 is an equidigital number, since it uses as much as digits as its factorization.

1138917037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 1138917037 is about 33747.8449237874. The cubic root of 1138917037 is about 1044.3130294111.

The spelling of 1138917037 in words is "one billion, one hundred thirty-eight million, nine hundred seventeen thousand, thirty-seven".