1881137469377 has 4 divisors (see below), whose sum is σ = 1881142628820. Its totient is φ = 1881132309936.

The previous prime is 1881137469311. The next prime is 1881137469451. The reversal of 1881137469377 is 7739647311881.

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 1602563573776 + 278573895601 = 1265924^2 + 527801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1881137469377 - 2¹⁴ = 1881137452993 is a prime.

It is a super-2 number, since 2×1881137469377² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1881137429377) 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, 1987502 + ... + 2777127.

It is an arithmetic number, because the mean of its divisors is an integer number (470285657205).

Almost surely, 2^{1881137469377} is an apocalyptic number.

It is an amenable number.

1881137469377 is a deficient number, since it is larger than the sum of its proper divisors (5159443).

1881137469377 is an equidigital number, since it uses as much as digits as its factorization.

1881137469377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159442.

The product of its digits is 42674688, while the sum is 65.

The spelling of 1881137469377 in words is "one trillion, eight hundred eighty-one billion, one hundred thirty-seven million, four hundred sixty-nine thousand, three hundred seventy-seven".