1022781838 has 32 divisors (see below), whose sum is σ = 1686605760. Its totient is φ = 462309120.

The previous prime is 1022781821. The next prime is 1022781841. The reversal of 1022781838 is 8381872201.

It is a super-4 number, since 4×1022781838⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022781838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288058 + ... + 291586.

It is an arithmetic number, because the mean of its divisors is an integer number (52706430).

Almost surely, 2^1022781838 is an apocalyptic number.

1022781838 is a deficient number, since it is larger than the sum of its proper divisors (663823922).

1022781838 is a wasteful number, since it uses less digits than its factorization.

1022781838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 1022781838 is about 31980.9605546800. The cubic root of 1022781838 is about 1007.5369969605.

The spelling of 1022781838 in words is "one billion, twenty-two million, seven hundred eighty-one thousand, eight hundred thirty-eight".