2026367781 has 16 divisors (see below), whose sum is σ = 2820341760. Its totient is φ = 1291696560.

The previous prime is 2026367771. The next prime is 2026367809. The reversal of 2026367781 is 1877636202.

It is not a de Polignac number, because 2026367781 - 2¹³ = 2026359589 is a prime.

It is a super-2 number, since 2×2026367781² = 8212332767749727922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2026367771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330300 + ... + 336378.

It is an arithmetic number, because the mean of its divisors is an integer number (176271360).

Almost surely, 2^2026367781 is an apocalyptic number.

It is an amenable number.

2026367781 is a deficient number, since it is larger than the sum of its proper divisors (793973979).

2026367781 is a wasteful number, since it uses less digits than its factorization.

2026367781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10936.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 2026367781 is about 45015.1950012437. The cubic root of 2026367781 is about 1265.4337810471.

The spelling of 2026367781 in words is "two billion, twenty-six million, three hundred sixty-seven thousand, seven hundred eighty-one".