1918372920111 has 8 divisors (see below), whose sum is σ = 2842033955760. Its totient is φ = 1278915280056.

The previous prime is 1918372920091. The next prime is 1918372920119. The reversal of 1918372920111 is 1110292738191.

1918372920111 is a `hidden beast` number, since 191 + 8 + 372 + 92 + 0 + 1 + 1 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1918372920111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918372920119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35525424420 + ... + 35525424473.

It is an arithmetic number, because the mean of its divisors is an integer number (355254244470).

Almost surely, 2^{1918372920111} is an apocalyptic number.

1918372920111 is a deficient number, since it is larger than the sum of its proper divisors (923661035649).

1918372920111 is an equidigital number, since it uses as much as digits as its factorization.

1918372920111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71050848902 (or 71050848896 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 45.

The spelling of 1918372920111 in words is "one trillion, nine hundred eighteen billion, three hundred seventy-two million, nine hundred twenty thousand, one hundred eleven".