1023165426 has 16 divisors (see below), whose sum is σ = 2053721664. Its totient is φ = 339823344.

The previous prime is 1023165421. The next prime is 1023165427. The reversal of 1023165426 is 6245613201.

It is a super-2 number, since 2×1023165426² = 2093734977923522952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1023165393 and 1023165402.

It is not an unprimeable number, because it can be changed into a prime (1023165421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306150 + ... + 309473.

It is an arithmetic number, because the mean of its divisors is an integer number (128357604).

Almost surely, 2^1023165426 is an apocalyptic number.

1023165426 is an abundant number, since it is smaller than the sum of its proper divisors (1030556238).

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

1023165426 is a wasteful number, since it uses less digits than its factorization.

1023165426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615905.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1023165426 is about 31986.9571231776. The cubic root of 1023165426 is about 1007.6629380562.

Adding to 1023165426 its reverse (6245613201), we get a palindrome (7268778627).

It can be divided in two parts, 10231 and 65426, that added together give a palindrome (75657).

The spelling of 1023165426 in words is "one billion, twenty-three million, one hundred sixty-five thousand, four hundred twenty-six".