1209490869743 has 16 divisors (see below), whose sum is σ = 1371174604800. Its totient is φ = 1057621574880.

The previous prime is 1209490869737. The next prime is 1209490869773. The reversal of 1209490869743 is 3479680949021.

It is not a de Polignac number, because 1209490869743 - 2²⁴ = 1209474092527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209490869773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3716558 + ... + 4028868.

It is an arithmetic number, because the mean of its divisors is an integer number (85698412800).

Almost surely, 2^{1209490869743} is an apocalyptic number.

1209490869743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1209490869743 is a deficient number, since it is larger than the sum of its proper divisors (161683735057).

1209490869743 is a wasteful number, since it uses less digits than its factorization.

1209490869743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328022.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 1209490869743 in words is "one trillion, two hundred nine billion, four hundred ninety million, eight hundred sixty-nine thousand, seven hundred forty-three".