1021018494 has 32 divisors (see below), whose sum is σ = 2093118336. Its totient is φ = 331927200.

The previous prime is 1021018483. The next prime is 1021018499. The reversal of 1021018494 is 4948101201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021018499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28029 + ... + 53175.

It is an arithmetic number, because the mean of its divisors is an integer number (65409948).

Almost surely, 2^1021018494 is an apocalyptic number.

1021018494 is an abundant number, since it is smaller than the sum of its proper divisors (1072099842).

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

1021018494 is a wasteful number, since it uses less digits than its factorization.

1021018494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25320.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1021018494 is about 31953.3800090069. The cubic root of 1021018494 is about 1006.9576435919.

Adding to 1021018494 its reverse (4948101201), we get a palindrome (5969119695).

The spelling of 1021018494 in words is "one billion, twenty-one million, eighteen thousand, four hundred ninety-four".