2061453739 has 4 divisors (see below), whose sum is σ = 2066045400. Its totient is φ = 2056862080.

The previous prime is 2061453727. The next prime is 2061453769. The reversal of 2061453739 is 9373541602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2061453739 - 2²¹ = 2059356587 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061453769) 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, 2295157 + ... + 2296054.

It is an arithmetic number, because the mean of its divisors is an integer number (516511350).

Almost surely, 2^2061453739 is an apocalyptic number.

2061453739 is a deficient number, since it is larger than the sum of its proper divisors (4591661).

2061453739 is an equidigital number, since it uses as much as digits as its factorization.

2061453739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591660.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 2061453739 is about 45403.2348957649. The cubic root of 2061453739 is about 1272.6955660946.

The spelling of 2061453739 in words is "two billion, sixty-one million, four hundred fifty-three thousand, seven hundred thirty-nine".