2061949537 has 4 divisors (see below), whose sum is σ = 2062096816. Its totient is φ = 2061802260.

The previous prime is 2061949529. The next prime is 2061949583. The reversal of 2061949537 is 7359491602.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7359491602 = 2 ⋅3679745801.

It is a cyclic number.

It is not a de Polignac number, because 2061949537 - 2³ = 2061949529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061949507) 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, 50139 + ... + 81472.

It is an arithmetic number, because the mean of its divisors is an integer number (515524204).

Almost surely, 2^2061949537 is an apocalyptic number.

It is an amenable number.

2061949537 is a deficient number, since it is larger than the sum of its proper divisors (147279).

2061949537 is a wasteful number, since it uses less digits than its factorization.

2061949537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147278.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 2061949537 is about 45408.6945088713. The cubic root of 2061949537 is about 1272.7975894587.

The spelling of 2061949537 in words is "two billion, sixty-one million, nine hundred forty-nine thousand, five hundred thirty-seven".