1993741155 has 192 divisors, whose sum is σ = 4497984000. Its totient is φ = 832156416.

The previous prime is 1993741133. The next prime is 1993741163. The reversal of 1993741155 is 5511473991.

It is not a de Polignac number, because 1993741155 - 2¹³ = 1993732963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1993741155.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 3644592 + ... + 3645138.

It is an arithmetic number, because the mean of its divisors is an integer number (23427000).

Almost surely, 2^1993741155 is an apocalyptic number.

1993741155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1993741155 is an abundant number, since it is smaller than the sum of its proper divisors (2504242845).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1993741155 is a wasteful number, since it uses less digits than its factorization.

1993741155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 610 counting only the distinct ones).

The product of its digits is 170100, while the sum is 45.

The square root of 1993741155 is about 44651.3287036343. The cubic root of 1993741155 is about 1258.6054014384.

The spelling of 1993741155 in words is "one billion, nine hundred ninety-three million, seven hundred forty-one thousand, one hundred fifty-five".