1983742398730 has 32 divisors (see below), whose sum is σ = 3922090243200. Its totient is φ = 719049874752.

The previous prime is 1983742398721. The next prime is 1983742398731. The reversal of 1983742398730 is 378932473891.

It is a super-2 number, since 2×1983742398730² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1983742398731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226968445 + ... + 226977184.

It is an arithmetic number, because the mean of its divisors is an integer number (122565320100).

Almost surely, 2^{1983742398730} is an apocalyptic number.

1983742398730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1983742398730 is a deficient number, since it is larger than the sum of its proper divisors (1938347844470).

1983742398730 is a wasteful number, since it uses less digits than its factorization.

1983742398730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453945678.

The product of its (nonzero) digits is 54867456, while the sum is 64.

The spelling of 1983742398730 in words is "one trillion, nine hundred eighty-three billion, seven hundred forty-two million, three hundred ninety-eight thousand, seven hundred thirty".