1070981638 has 8 divisors (see below), whose sum is σ = 1606656600. Its totient is φ = 535429440.

The previous prime is 1070981627. The next prime is 1070981641. The reversal of 1070981638 is 8361890701.

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

It is a super-2 number, since 2×1070981638² = 2294003337866326088, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1070981594 and 1070981603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4363 + ... + 46486.

It is an arithmetic number, because the mean of its divisors is an integer number (200832075).

Almost surely, 2^1070981638 is an apocalyptic number.

1070981638 is a deficient number, since it is larger than the sum of its proper divisors (535674962).

1070981638 is a wasteful number, since it uses less digits than its factorization.

1070981638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61382.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1070981638 is about 32725.8558024080. The cubic root of 1070981638 is about 1023.1218075700.

The spelling of 1070981638 in words is "one billion, seventy million, nine hundred eighty-one thousand, six hundred thirty-eight".