1641487738734 has 24 divisors (see below), whose sum is σ = 3556812024792. Its totient is φ = 547123309200.

The previous prime is 1641487738733. The next prime is 1641487738741. The reversal of 1641487738734 is 4378377841461.

It is a happy number.

1641487738734 is a `hidden beast` number, since 1 + 6 + 4 + 1 + 487 + 73 + 87 + 3 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641487738733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3014217 + ... + 3516884.

It is an arithmetic number, because the mean of its divisors is an integer number (148200501033).

Almost surely, 2^{1641487738734} is an apocalyptic number.

1641487738734 is an abundant number, since it is smaller than the sum of its proper divisors (1915324286058).

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

1641487738734 is a wasteful number, since it uses less digits than its factorization.

1641487738734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6545072 (or 6545069 counting only the distinct ones).

The product of its digits is 75866112, while the sum is 63.

The spelling of 1641487738734 in words is "one trillion, six hundred forty-one billion, four hundred eighty-seven million, seven hundred thirty-eight thousand, seven hundred thirty-four".