1420593813 has 6 divisors (see below), whose sum is σ = 2051968854. Its totient is φ = 947062536.

The previous prime is 1420593749. The next prime is 1420593833. The reversal of 1420593813 is 3183950241.

It can be written as a sum of positive squares in only one way, i.e., 1099718244 + 320875569 = 33162^2 + 17913^2 .

It is not a de Polignac number, because 1420593813 - 2⁶ = 1420593749 is a prime.

It is a super-3 number, since 3×1420593813³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420593833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78921870 + ... + 78921887.

It is an arithmetic number, because the mean of its divisors is an integer number (341994809).

Almost surely, 2^1420593813 is an apocalyptic number.

It is an amenable number.

1420593813 is a deficient number, since it is larger than the sum of its proper divisors (631375041).

1420593813 is a wasteful number, since it uses less digits than its factorization.

1420593813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157843763 (or 157843760 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1420593813 is about 37690.7656197111. The cubic root of 1420593813 is about 1124.1475189270.

The spelling of 1420593813 in words is "one billion, four hundred twenty million, five hundred ninety-three thousand, eight hundred thirteen".