1026381655 has 8 divisors (see below), whose sum is σ = 1326400992. Its totient is φ = 757943328.

The previous prime is 1026381619. The next prime is 1026381661. The reversal of 1026381655 is 5561836201.

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

It is a cyclic number.

It is not a de Polignac number, because 1026381655 - 2¹⁵ = 1026348887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 7895179 + ... + 7895308.

It is an arithmetic number, because the mean of its divisors is an integer number (165800124).

Almost surely, 2^1026381655 is an apocalyptic number.

1026381655 is a deficient number, since it is larger than the sum of its proper divisors (300019337).

1026381655 is a wasteful number, since it uses less digits than its factorization.

1026381655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15790505.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1026381655 is about 32037.1917464687. The cubic root of 1026381655 is about 1008.7176664508.

The spelling of 1026381655 in words is "one billion, twenty-six million, three hundred eighty-one thousand, six hundred fifty-five".