1659043954 has 16 divisors (see below), whose sum is σ = 2503996416. Its totient is φ = 824387200.

The previous prime is 1659043949. The next prime is 1659043961. The reversal of 1659043954 is 4593409561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793899 + ... + 795985.

It is an arithmetic number, because the mean of its divisors is an integer number (156499776).

Almost surely, 2^1659043954 is an apocalyptic number.

1659043954 is a deficient number, since it is larger than the sum of its proper divisors (844952462).

1659043954 is a wasteful number, since it uses less digits than its factorization.

1659043954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 1659043954 is about 40731.3632720536. The cubic root of 1659043954 is about 1183.8207937510.

The spelling of 1659043954 in words is "one billion, six hundred fifty-nine million, forty-three thousand, nine hundred fifty-four".