1056019638 has 8 divisors (see below), whose sum is σ = 2112039288. Its totient is φ = 352006544.

The previous prime is 1056019633. The next prime is 1056019661. The reversal of 1056019638 is 8369106501.

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

1056019638 is an admirable number.

It is a super-2 number, since 2×1056019638² = 2230354951683302088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056019596 and 1056019605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056019633) 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, 88001631 + ... + 88001642.

It is an arithmetic number, because the mean of its divisors is an integer number (264004911).

Almost surely, 2^1056019638 is an apocalyptic number.

1056019638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1056019638 is a wasteful number, since it uses less digits than its factorization.

1056019638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176003278.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1056019638 is about 32496.4557759766. The cubic root of 1056019638 is about 1018.3349863734.

The spelling of 1056019638 in words is "one billion, fifty-six million, nineteen thousand, six hundred thirty-eight".