1902126349479 has 4 divisors (see below), whose sum is σ = 2536168465976. Its totient is φ = 1268084232984.

The previous prime is 1902126349463. The next prime is 1902126349483. The reversal of 1902126349479 is 9749436212091.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1902126349479 - 2⁴ = 1902126349463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902126349429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317021058244 + ... + 317021058249.

It is an arithmetic number, because the mean of its divisors is an integer number (634042116494).

Almost surely, 2^{1902126349479} is an apocalyptic number.

1902126349479 is a deficient number, since it is larger than the sum of its proper divisors (634042116497).

1902126349479 is an equidigital number, since it uses as much as digits as its factorization.

1902126349479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634042116496.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 1902126349479 in words is "one trillion, nine hundred two billion, one hundred twenty-six million, three hundred forty-nine thousand, four hundred seventy-nine".