1026631518 has 48 divisors (see below), whose sum is σ = 2299561488. Its totient is φ = 305219200.

The previous prime is 1026631511. The next prime is 1026631531. The reversal of 1026631518 is 8151366201.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026631511) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 25138 + ... + 51818.

It is an arithmetic number, because the mean of its divisors is an integer number (47907531).

Almost surely, 2^1026631518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1026631518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149780744).

1026631518 is an abundant number, since it is smaller than the sum of its proper divisors (1272929970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1026631518 is a wasteful number, since it uses less digits than its factorization.

1026631518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26761 (or 26750 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1026631518 is about 32041.0910862911. The cubic root of 1026631518 is about 1008.7995140986.

Adding to 1026631518 its reverse (8151366201), we get a palindrome (9177997719).

The spelling of 1026631518 in words is "one billion, twenty-six million, six hundred thirty-one thousand, five hundred eighteen".