1917201381376 has 48 divisors (see below), whose sum is σ = 3834351841320. Its totient is φ = 958379335680.

The previous prime is 1917201381371. The next prime is 1917201381383. The reversal of 1917201381376 is 6731831027191.

It is a super-3 number, since 3×1917201381376³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1917201381371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8948335 + ... + 9160081.

Almost surely, 2^{1917201381376} is an apocalyptic number.

1917201381376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1917201381376 is a deficient number, since it is larger than the sum of its proper divisors (1917150459944).

1917201381376 is an equidigital number, since it uses as much as digits as its factorization.

1917201381376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216190 (or 216170 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 1917201381376 in words is "one trillion, nine hundred seventeen billion, two hundred one million, three hundred eighty-one thousand, three hundred seventy-six".