1401993215 has 16 divisors (see below), whose sum is σ = 1927990272. Its totient is φ = 958738464.

The previous prime is 1401993191. The next prime is 1401993217. The reversal of 1401993215 is 5123991041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1401993215 - 2¹⁰ = 1401992191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401993217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41729 + ... + 67418.

It is an arithmetic number, because the mean of its divisors is an integer number (120499392).

Almost surely, 2^1401993215 is an apocalyptic number.

1401993215 is a deficient number, since it is larger than the sum of its proper divisors (525997057).

1401993215 is a wasteful number, since it uses less digits than its factorization.

1401993215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109526.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1401993215 is about 37443.1998499060. The cubic root of 1401993215 is about 1119.2195921325.

The spelling of 1401993215 in words is "one billion, four hundred one million, nine hundred ninety-three thousand, two hundred fifteen".