1011438001 has 32 divisors (see below), whose sum is σ = 1292544000. Its totient is φ = 770487552.

The previous prime is 1011437971. The next prime is 1011438019. The reversal of 1011438001 is 1008341101.

It is a cyclic number.

It is not a de Polignac number, because 1011438001 - 2¹⁷ = 1011306929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1011438001.

It is not an unprimeable number, because it can be changed into a prime (1011238001) 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, 992070 + ... + 993088.

It is an arithmetic number, because the mean of its divisors is an integer number (40392000).

Almost surely, 2^1011438001 is an apocalyptic number.

It is an amenable number.

1011438001 is a deficient number, since it is larger than the sum of its proper divisors (281105999).

1011438001 is a wasteful number, since it uses less digits than its factorization.

1011438001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1011438001 is about 31803.1130708929. The cubic root of 1011438001 is about 1003.7982222428.

Adding to 1011438001 its reverse (1008341101), we get a palindrome (2019779102).

The spelling of 1011438001 in words is "one billion, eleven million, four hundred thirty-eight thousand, one".