1401611604 has 24 divisors (see below), whose sum is σ = 3275727840. Its totient is φ = 466446624.

The previous prime is 1401611593. The next prime is 1401611633. The reversal of 1401611604 is 4061161041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86919 + ... + 101774.

It is an arithmetic number, because the mean of its divisors is an integer number (136488660).

Almost surely, 2^1401611604 is an apocalyptic number.

It is an amenable number.

1401611604 is an abundant number, since it is smaller than the sum of its proper divisors (1874116236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401611604 is a wasteful number, since it uses less digits than its factorization.

1401611604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189319 (or 189317 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1401611604 is about 37438.1036378714. The cubic root of 1401611604 is about 1119.1180354676.

Adding to 1401611604 its reverse (4061161041), we get a palindrome (5462772645).

The spelling of 1401611604 in words is "one billion, four hundred one million, six hundred eleven thousand, six hundred four".