11894462645 has 16 divisors (see below), whose sum is σ = 15746218992. Its totient is φ = 8569367040.

The previous prime is 11894462639. The next prime is 11894462659. The reversal of 11894462645 is 54626449811.

It can be written as a sum of positive squares in 8 ways, for example, as 3612370609 + 8282092036 = 60103^2 + 91006^2 .

It is not a de Polignac number, because 11894462645 - 2⁸ = 11894462389 is a prime.

It is a super-2 number, since 2×11894462645² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11894462593 and 11894462602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2228942 + ... + 2234271.

It is an arithmetic number, because the mean of its divisors is an integer number (984138687).

Almost surely, 2^11894462645 is an apocalyptic number.

It is an amenable number.

11894462645 is a deficient number, since it is larger than the sum of its proper divisors (3851756347).

11894462645 is a wasteful number, since it uses less digits than its factorization.

11894462645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463272.

The product of its digits is 1658880, while the sum is 50.

The spelling of 11894462645 in words is "eleven billion, eight hundred ninety-four million, four hundred sixty-two thousand, six hundred forty-five".