1903138807 has 2 divisors, whose sum is σ = 1903138808. Its totient is φ = 1903138806.

The previous prime is 1903138793. The next prime is 1903138837. The reversal of 1903138807 is 7088313091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1903138807 - 2¹¹ = 1903136759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1903138807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1903138837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951569403 + 951569404.

It is an arithmetic number, because the mean of its divisors is an integer number (951569404).

Almost surely, 2^1903138807 is an apocalyptic number.

1903138807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1903138807 is an equidigital number, since it uses as much as digits as its factorization.

1903138807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1903138807 is about 43624.9791633188. The cubic root of 1903138807 is about 1239.2439909094.

The spelling of 1903138807 in words is "one billion, nine hundred three million, one hundred thirty-eight thousand, eight hundred seven".