1135389640 has 64 divisors (see below), whose sum is σ = 3184997760. Its totient is φ = 353886720.

The previous prime is 1135389637. The next prime is 1135389649. The reversal of 1135389640 is 469835311.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1135389593 and 1135389602.

It is not an unprimeable number, because it can be changed into a prime (1135389649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181237 + ... + 187396.

It is an arithmetic number, because the mean of its divisors is an integer number (49765590).

Almost surely, 2^1135389640 is an apocalyptic number.

1135389640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1135389640 is an abundant number, since it is smaller than the sum of its proper divisors (2049608120).

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

1135389640 is a wasteful number, since it uses less digits than its factorization.

1135389640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368662 (or 368658 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1135389640 is about 33695.5433254904. The cubic root of 1135389640 is about 1043.2337830505.

The spelling of 1135389640 in words is "one billion, one hundred thirty-five million, three hundred eighty-nine thousand, six hundred forty".