2070673781 has 4 divisors (see below), whose sum is σ = 2258916864. Its totient is φ = 1882430700.

The previous prime is 2070673771. The next prime is 2070673823. The reversal of 2070673781 is 1873760702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2070673781 is a prime.

It is a super-3 number, since 3×2070673781³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070673771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94121525 + ... + 94121546.

It is an arithmetic number, because the mean of its divisors is an integer number (564729216).

Almost surely, 2^2070673781 is an apocalyptic number.

It is an amenable number.

2070673781 is a deficient number, since it is larger than the sum of its proper divisors (188243083).

2070673781 is a wasteful number, since it uses less digits than its factorization.

2070673781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188243082.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 2070673781 is about 45504.6566957713. The cubic root of 2070673781 is about 1274.5901604182.

The spelling of 2070673781 in words is "two billion, seventy million, six hundred seventy-three thousand, seven hundred eighty-one".