1361036988 has 72 divisors (see below), whose sum is σ = 3496396176. Its totient is φ = 446342400.

The previous prime is 1361036981. The next prime is 1361037053. The reversal of 1361036988 is 8896301631.

It is a happy number.

It is a super-2 number, since 2×1361036988² = 3704843365408224288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361036981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 838818 + ... + 840438.

It is an arithmetic number, because the mean of its divisors is an integer number (48561058).

Almost surely, 2^1361036988 is an apocalyptic number.

1361036988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361036988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1748198088).

1361036988 is an abundant number, since it is smaller than the sum of its proper divisors (2135359188).

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

1361036988 is a wasteful number, since it uses less digits than its factorization.

1361036988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1361036988 is about 36892.2347927040. The cubic root of 1361036988 is about 1108.2131758458.

The spelling of 1361036988 in words is "one billion, three hundred sixty-one million, thirty-six thousand, nine hundred eighty-eight".