1053353994 has 64 divisors (see below), whose sum is σ = 2636347392. Its totient is φ = 272577600.

The previous prime is 1053353993. The next prime is 1053354007. The reversal of 1053353994 is 4993533501.

It is a super-2 number, since 2×1053353994² = 2219109273351504072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1053353993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123859 + ... + 132089.

It is an arithmetic number, because the mean of its divisors is an integer number (41192928).

Almost surely, 2^1053353994 is an apocalyptic number.

1053353994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1053353994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318173696).

1053353994 is an abundant number, since it is smaller than the sum of its proper divisors (1582993398).

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

1053353994 is a wasteful number, since it uses less digits than its factorization.

1053353994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531.

The product of its (nonzero) digits is 218700, while the sum is 42.

The square root of 1053353994 is about 32455.4154803170. The cubic root of 1053353994 is about 1017.4774247376.

The spelling of 1053353994 in words is "one billion, fifty-three million, three hundred fifty-three thousand, nine hundred ninety-four".