1138953850 has 12 divisors (see below), whose sum is σ = 2118454254. Its totient is φ = 455581520.

The previous prime is 1138953847. The next prime is 1138953911. The reversal of 1138953850 is 583598311.

It can be written as a sum of positive squares in 3 ways, for example, as 701349289 + 437604561 = 26483^2 + 20919^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1138953797 and 1138953806.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11389489 + ... + 11389588.

Almost surely, 2^1138953850 is an apocalyptic number.

1138953850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138953850 is a deficient number, since it is larger than the sum of its proper divisors (979500404).

1138953850 is a wasteful number, since it uses less digits than its factorization.

1138953850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22779089 (or 22779084 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 1138953850 is about 33748.3903319847. The cubic root of 1138953850 is about 1044.3242810008.

The spelling of 1138953850 in words is "one billion, one hundred thirty-eight million, nine hundred fifty-three thousand, eight hundred fifty".