1955671641974 has 8 divisors (see below), whose sum is σ = 2933516734920. Its totient is φ = 977832730336.

The previous prime is 1955671641971. The next prime is 1955671642019. The reversal of 1955671641974 is 4791461765591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1955671641974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955671641971) 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, 650804 + ... + 2082039.

It is an arithmetic number, because the mean of its divisors is an integer number (366689591865).

Almost surely, 2^{1955671641974} is an apocalyptic number.

1955671641974 is a deficient number, since it is larger than the sum of its proper divisors (977845092946).

1955671641974 is a wasteful number, since it uses less digits than its factorization.

1955671641974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090654.

The product of its digits is 57153600, while the sum is 65.

The spelling of 1955671641974 in words is "one trillion, nine hundred fifty-five billion, six hundred seventy-one million, six hundred forty-one thousand, nine hundred seventy-four".