1918292729390 has 16 divisors (see below), whose sum is σ = 3453959855808. Its totient is φ = 767087548896.

The previous prime is 1918292729377. The next prime is 1918292729459. The reversal of 1918292729390 is 939272928191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28657757 + ... + 28724616.

It is an arithmetic number, because the mean of its divisors is an integer number (215872490988).

Almost surely, 2^{1918292729390} is an apocalyptic number.

1918292729390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1918292729390 is a deficient number, since it is larger than the sum of its proper divisors (1535667126418).

1918292729390 is a wasteful number, since it uses less digits than its factorization.

1918292729390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57385723.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The spelling of 1918292729390 in words is "one trillion, nine hundred eighteen billion, two hundred ninety-two million, seven hundred twenty-nine thousand, three hundred ninety".