1401628605 has 32 divisors (see below), whose sum is σ = 2433594240. Its totient is φ = 684752640.

The previous prime is 1401628589. The next prime is 1401628607. The reversal of 1401628605 is 5068261041.

It is not a de Polignac number, because 1401628605 - 2⁴ = 1401628589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401628607) 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, 1890 + ... + 52979.

It is an arithmetic number, because the mean of its divisors is an integer number (76049820).

Almost surely, 2^1401628605 is an apocalyptic number.

1401628605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401628605 is a deficient number, since it is larger than the sum of its proper divisors (1031965635).

1401628605 is a wasteful number, since it uses less digits than its factorization.

1401628605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55021.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1401628605 is about 37438.3306919526. The cubic root of 1401628605 is about 1119.1225602705.

Adding to 1401628605 its reverse (5068261041), we get a palindrome (6469889646).

The spelling of 1401628605 in words is "one billion, four hundred one million, six hundred twenty-eight thousand, six hundred five".