881642738 has 4 divisors (see below), whose sum is σ = 1322464110. Its totient is φ = 440821368.

The previous prime is 881642737. The next prime is 881642743. The reversal of 881642738 is 837246188.

881642738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 474934849 + 406707889 = 21793^2 + 20167^2 .

It is a junction number, because it is equal to n+sod(n) for n = 881642692 and 881642701.

It is not an unprimeable number, because it can be changed into a prime (881642737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220410683 + ... + 220410686.

Almost surely, 2^881642738 is an apocalyptic number.

881642738 is a deficient number, since it is larger than the sum of its proper divisors (440821372).

881642738 is a wasteful number, since it uses less digits than its factorization.

881642738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440821371.

The product of its digits is 516096, while the sum is 47.

The square root of 881642738 is about 29692.4693819830. The cubic root of 881642738 is about 958.8798922302.

The spelling of 881642738 in words is "eight hundred eighty-one million, six hundred forty-two thousand, seven hundred thirty-eight".