1213854002 has 4 divisors (see below), whose sum is σ = 1820781006. Its totient is φ = 606927000.

The previous prime is 1213853983. The next prime is 1213854017. The reversal of 1213854002 is 2004583121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2004583121 = 1439 ⋅1393039.

It can be written as a sum of positive squares in only one way, i.e., 1202771761 + 11082241 = 34681^2 + 3329^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303463499 + ... + 303463502.

Almost surely, 2^1213854002 is an apocalyptic number.

1213854002 is a deficient number, since it is larger than the sum of its proper divisors (606927004).

1213854002 is an equidigital number, since it uses as much as digits as its factorization.

1213854002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606927003.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1213854002 is about 34840.4076038154. The cubic root of 1213854002 is about 1066.7323967091.

The spelling of 1213854002 in words is "one billion, two hundred thirteen million, eight hundred fifty-four thousand, two".