1881658147073 has 4 divisors (see below), whose sum is σ = 1907434286148. Its totient is φ = 1855882008000.

The previous prime is 1881658147063. The next prime is 1881658147081. The reversal of 1881658147073 is 3707418561881.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 430712626369 + 1450945520704 = 656287^2 + 1204552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1881658147073 - 2¹² = 1881658142977 is a prime.

It is a super-3 number, since 3×1881658147073³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1881658147063) 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, 12888069428 + ... + 12888069573.

It is an arithmetic number, because the mean of its divisors is an integer number (476858571537).

Almost surely, 2^{1881658147073} is an apocalyptic number.

It is an amenable number.

1881658147073 is a deficient number, since it is larger than the sum of its proper divisors (25776139075).

1881658147073 is an equidigital number, since it uses as much as digits as its factorization.

1881658147073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25776139074.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 1881658147073 in words is "one trillion, eight hundred eighty-one billion, six hundred fifty-eight million, one hundred forty-seven thousand, seventy-three".