1365339990 has 96 divisors (see below), whose sum is σ = 3789414144. Its totient is φ = 308413440.

The previous prime is 1365339979. The next prime is 1365339991. The reversal of 1365339990 is 999335631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365339991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1975545 + ... + 1976235.

It is an arithmetic number, because the mean of its divisors is an integer number (39473064).

Almost surely, 2^1365339990 is an apocalyptic number.

1365339990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1365339990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1894707072).

1365339990 is an abundant number, since it is smaller than the sum of its proper divisors (2424074154).

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

1365339990 is an equidigital number, since it uses as much as digits as its factorization.

1365339990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 590490, while the sum is 48.

The square root of 1365339990 is about 36950.5073036894. The cubic root of 1365339990 is about 1109.3798418780.

The spelling of 1365339990 in words is "one billion, three hundred sixty-five million, three hundred thirty-nine thousand, nine hundred ninety".