1026047981 has 8 divisors (see below), whose sum is σ = 1185802560. Its totient is φ = 869587488.

The previous prime is 1026047969. The next prime is 1026047987. The reversal of 1026047981 is 1897406201.

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

It is not a de Polignac number, because 1026047981 - 2¹⁸ = 1025785837 is a prime.

It is a super-2 number, since 2×1026047981² = 2105548918628352722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026047987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822851 + ... + 824096.

It is an arithmetic number, because the mean of its divisors is an integer number (148225320).

Almost surely, 2^1026047981 is an apocalyptic number.

It is an amenable number.

1026047981 is a deficient number, since it is larger than the sum of its proper divisors (159754579).

1026047981 is an equidigital number, since it uses as much as digits as its factorization.

1026047981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647043.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 1026047981 is about 32031.9837194015. The cubic root of 1026047981 is about 1008.6083441086.

The spelling of 1026047981 in words is "one billion, twenty-six million, forty-seven thousand, nine hundred eighty-one".