1001400073 has 24 divisors (see below), whose sum is σ = 1113134400. Its totient is φ = 897309504.

The previous prime is 1001400047. The next prime is 1001400077. The reversal of 1001400073 is 3700041001.

It is not a de Polignac number, because 1001400073 - 2⁵ = 1001400041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001400077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1547436 + ... + 1548082.

It is an arithmetic number, because the mean of its divisors is an integer number (46380600).

Almost surely, 2^1001400073 is an apocalyptic number.

It is an amenable number.

1001400073 is a deficient number, since it is larger than the sum of its proper divisors (111734327).

1001400073 is an equidigital number, since it uses as much as digits as its factorization.

1001400073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1001400073 is about 31644.9059565675. The cubic root of 1001400073 is about 1000.4664733688.

Adding to 1001400073 its reverse (3700041001), we get a palindrome (4701441074).

The spelling of 1001400073 in words is "one billion, one million, four hundred thousand, seventy-three".