1138419490 has 32 divisors (see below), whose sum is σ = 2219883120. Its totient is φ = 420331392.

The previous prime is 1138419487. The next prime is 1138419509. The reversal of 1138419490 is 949148311.

It can be written as a sum of positive squares in 8 ways, for example, as 120362841 + 1018056649 = 10971^2 + 31907^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3939 + ... + 47878.

Almost surely, 2^1138419490 is an apocalyptic number.

1138419490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138419490 is a deficient number, since it is larger than the sum of its proper divisors (1081463630).

1138419490 is an equidigital number, since it uses as much as digits as its factorization.

1138419490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51863 (or 51837 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1138419490 is about 33740.4725811599. The cubic root of 1138419490 is about 1044.1609344883.

The spelling of 1138419490 in words is "one billion, one hundred thirty-eight million, four hundred nineteen thousand, four hundred ninety".