1394864510440 has 32 divisors (see below), whose sum is σ = 3167776421280. Its totient is φ = 552731355712.

The previous prime is 1394864510437. The next prime is 1394864510443. The reversal of 1394864510440 is 440154684931.

It is an interprime number because it is at equal distance from previous prime (1394864510437) and next prime (1394864510443).

It is not an unprimeable number, because it can be changed into a prime (1394864510443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162947182 + ... + 162955741.

It is an arithmetic number, because the mean of its divisors is an integer number (98993013165).

Almost surely, 2^{1394864510440} is an apocalyptic number.

1394864510440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1394864510440 is an abundant number, since it is smaller than the sum of its proper divisors (1772911910840).

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

1394864510440 is a wasteful number, since it uses less digits than its factorization.

1394864510440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325903041 (or 325903037 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 1394864510440 in words is "one trillion, three hundred ninety-four billion, eight hundred sixty-four million, five hundred ten thousand, four hundred forty".