1361086140 has 24 divisors (see below), whose sum is σ = 3811041360. Its totient is φ = 362956288.

The previous prime is 1361086127. The next prime is 1361086141. The reversal of 1361086140 is 416801631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1361086098 and 1361086107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361086141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11342325 + ... + 11342444.

It is an arithmetic number, because the mean of its divisors is an integer number (158793390).

Almost surely, 2^1361086140 is an apocalyptic number.

1361086140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361086140 is an abundant number, since it is smaller than the sum of its proper divisors (2449955220).

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

1361086140 is a wasteful number, since it uses less digits than its factorization.

1361086140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22684781 (or 22684779 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1361086140 is about 36892.9009431354. The cubic root of 1361086140 is about 1108.2265162225.

Adding to 1361086140 its reverse (416801631), we get a palindrome (1777887771).

The spelling of 1361086140 in words is "one billion, three hundred sixty-one million, eighty-six thousand, one hundred forty".