1401171613 has 4 divisors (see below), whose sum is σ = 1401563680. Its totient is φ = 1400779548.

The previous prime is 1401171601. The next prime is 1401171617. The reversal of 1401171613 is 3161711041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3161711041 = 12983 ⋅243527.

It is a cyclic number.

It is not a de Polignac number, because 1401171613 - 2¹⁷ = 1401040541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401171617) 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, 190623 + ... + 197836.

It is an arithmetic number, because the mean of its divisors is an integer number (350390920).

Almost surely, 2^1401171613 is an apocalyptic number.

It is an amenable number.

1401171613 is a deficient number, since it is larger than the sum of its proper divisors (392067).

1401171613 is an equidigital number, since it uses as much as digits as its factorization.

1401171613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392066.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1401171613 is about 37432.2269308146. The cubic root of 1401171613 is about 1119.0009194763. Note that the first 3 decimals are identical.

Adding to 1401171613 its reverse (3161711041), we get a palindrome (4562882654).

The spelling of 1401171613 in words is "one billion, four hundred one million, one hundred seventy-one thousand, six hundred thirteen".