1029657438 has 12 divisors (see below), whose sum is σ = 2230924488. Its totient is φ = 343219140.

The previous prime is 1029657437. The next prime is 1029657449. The reversal of 1029657438 is 8347569201.

1029657438 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

1029657438 is strictly pandigital in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 1029657393 and 1029657402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029657437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28601578 + ... + 28601613.

It is an arithmetic number, because the mean of its divisors is an integer number (185910374).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1029657438 = 2059314876, but 3⋅1029657438 = 3088972314 is not.

Almost surely, 2^1029657438 is an apocalyptic number.

1029657438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1029657438 is an abundant number, since it is smaller than the sum of its proper divisors (1201267050).

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

1029657438 is a wasteful number, since it uses less digits than its factorization.

1029657438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57203199 (or 57203196 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1029657438 is about 32088.2757093615. The cubic root of 1029657438 is about 1009.7896624371.

The spelling of 1029657438 in words is "one billion, twenty-nine million, six hundred fifty-seven thousand, four hundred thirty-eight".