1964726139830 has 16 divisors (see below), whose sum is σ = 3584952355104. Its totient is φ = 775124832960.

The previous prime is 1964726139829. The next prime is 1964726139853. The reversal of 1964726139830 is 389316274691.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1964726139830.

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, 1345702106 + ... + 1345703565.

It is an arithmetic number, because the mean of its divisors is an integer number (224059522194).

Almost surely, 2^{1964726139830} is an apocalyptic number.

1964726139830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1964726139830 is a deficient number, since it is larger than the sum of its proper divisors (1620226215274).

1964726139830 is a wasteful number, since it uses less digits than its factorization.

1964726139830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691405751.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 1964726139830 in words is "one trillion, nine hundred sixty-four billion, seven hundred twenty-six million, one hundred thirty-nine thousand, eight hundred thirty".