1618863937848 has 64 divisors (see below), whose sum is σ = 4497020236800. Its totient is φ = 539600196960.

The previous prime is 1618863937841. The next prime is 1618863937879. The reversal of 1618863937848 is 8487393688161.

1618863937848 is a `hidden beast` number, since 1 + 6 + 188 + 6 + 39 + 378 + 48 = 666.

It is a super-2 number, since 2×1618863937848² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618863937841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5976633 + ... + 6241623.

It is an arithmetic number, because the mean of its divisors is an integer number (70265941200).

Almost surely, 2^{1618863937848} is an apocalyptic number.

1618863937848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1618863937848 is an abundant number, since it is smaller than the sum of its proper divisors (2878156298952).

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

1618863937848 is a wasteful number, since it uses less digits than its factorization.

1618863937848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293289 (or 293279 counting only the distinct ones).

The product of its digits is 334430208, while the sum is 72.

The spelling of 1618863937848 in words is "one trillion, six hundred eighteen billion, eight hundred sixty-three million, nine hundred thirty-seven thousand, eight hundred forty-eight".