1243910341690 has 64 divisors (see below), whose sum is σ = 2385471264768. Its totient is φ = 465391897600.

The previous prime is 1243910341637. The next prime is 1243910341693. The reversal of 1243910341690 is 961430193421.

It is a super-2 number, since 2×1243910341690² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243910341693) 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 31 ways as a sum of consecutive naturals, for example, 34432617 + ... + 34468723.

It is an arithmetic number, because the mean of its divisors is an integer number (37272988512).

Almost surely, 2^{1243910341690} is an apocalyptic number.

1243910341690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243910341690 is a deficient number, since it is larger than the sum of its proper divisors (1141560923078).

1243910341690 is a wasteful number, since it uses less digits than its factorization.

1243910341690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37383.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 1243910341690 in words is "one trillion, two hundred forty-three billion, nine hundred ten million, three hundred forty-one thousand, six hundred ninety".