1401332618 has 16 divisors (see below), whose sum is σ = 2479778304. Its totient is φ = 581197680.

The previous prime is 1401332617. The next prime is 1401332623. The reversal of 1401332618 is 8162331041.

It is not an unprimeable number, because it can be changed into a prime (1401332617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1614005 + ... + 1614872.

It is an arithmetic number, because the mean of its divisors is an integer number (154986144).

Almost surely, 2^1401332618 is an apocalyptic number.

1401332618 is a deficient number, since it is larger than the sum of its proper divisors (1078445686).

1401332618 is a wasteful number, since it uses less digits than its factorization.

1401332618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228917.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1401332618 is about 37434.3774891476. The cubic root of 1401332618 is about 1119.0437783336.

Adding to 1401332618 its reverse (8162331041), we get a palindrome (9563663659).

The spelling of 1401332618 in words is "one billion, four hundred one million, three hundred thirty-two thousand, six hundred eighteen".