1021544794 has 8 divisors (see below), whose sum is σ = 1538729280. Its totient is φ = 508635036.

The previous prime is 1021544791. The next prime is 1021544801. The reversal of 1021544794 is 4974451201.

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

It is a super-2 number, since 2×1021544794² = 2087107532297004872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021544791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068084 + ... + 1069039.

It is an arithmetic number, because the mean of its divisors is an integer number (192341160).

Almost surely, 2^1021544794 is an apocalyptic number.

1021544794 is a deficient number, since it is larger than the sum of its proper divisors (517184486).

1021544794 is a wasteful number, since it uses less digits than its factorization.

1021544794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137364.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1021544794 is about 31961.6143835070. The cubic root of 1021544794 is about 1007.1306312436.

Adding to 1021544794 its reverse (4974451201), we get a palindrome (5995995995).

The spelling of 1021544794 in words is "one billion, twenty-one million, five hundred forty-four thousand, seven hundred ninety-four".