1038390787 has 64 divisors (see below), whose sum is σ = 1361608704. Its totient is φ = 771563520.

The previous prime is 1038390781. The next prime is 1038390811. The reversal of 1038390787 is 7870938301.

It is a happy number.

1038390787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1038390787 - 2²⁷ = 904173059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1038390781) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9189243 + ... + 9189355.

It is an arithmetic number, because the mean of its divisors is an integer number (21275136).

Almost surely, 2^1038390787 is an apocalyptic number.

1038390787 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1038390787 is a deficient number, since it is larger than the sum of its proper divisors (323217917).

1038390787 is a wasteful number, since it uses less digits than its factorization.

1038390787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1038390787 is about 32224.0715459732. The cubic root of 1038390787 is about 1012.6365733975.

The spelling of 1038390787 in words is "one billion, thirty-eight million, three hundred ninety thousand, seven hundred eighty-seven".