1149240438 has 24 divisors (see below), whose sum is σ = 2490691008. Its totient is φ = 382977072.

The previous prime is 1149240437. The next prime is 1149240439. The reversal of 1149240438 is 8340429411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1149240437) and next prime (1149240439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149240431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91995 + ... + 103737.

It is an arithmetic number, because the mean of its divisors is an integer number (103778792).

Almost surely, 2^1149240438 is an apocalyptic number.

1149240438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1149240438 is an abundant number, since it is smaller than the sum of its proper divisors (1341450570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1149240438 is a wasteful number, since it uses less digits than its factorization.

1149240438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17188 (or 17185 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1149240438 is about 33900.4489350805. The cubic root of 1149240438 is about 1047.4588400009.

Adding to 1149240438 its reverse (8340429411), we get a palindrome (9489669849).

The spelling of 1149240438 in words is "one billion, one hundred forty-nine million, two hundred forty thousand, four hundred thirty-eight".