2019540977 has 16 divisors (see below), whose sum is σ = 2100288960. Its totient is φ = 1940448000.

The previous prime is 2019540961. The next prime is 2019541019. The reversal of 2019540977 is 7790459102.

It is not a de Polignac number, because 2019540977 - 2⁴ = 2019540961 is a prime.

It is a super-2 number, since 2×2019540977² = 8157091515564229058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2019540907) 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, 1391102 + ... + 1392552.

It is an arithmetic number, because the mean of its divisors is an integer number (131268060).

Almost surely, 2^2019540977 is an apocalyptic number.

It is an amenable number.

2019540977 is a deficient number, since it is larger than the sum of its proper divisors (80747983).

2019540977 is a wasteful number, since it uses less digits than its factorization.

2019540977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 2019540977 is about 44939.3032545010. The cubic root of 2019540977 is about 1264.0111061037.

The spelling of 2019540977 in words is "two billion, nineteen million, five hundred forty thousand, nine hundred seventy-seven".