1654229987 has 2 divisors, whose sum is σ = 1654229988. Its totient is φ = 1654229986.

The previous prime is 1654229971. The next prime is 1654230007. The reversal of 1654229987 is 7899224561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1654229987 - 2⁴ = 1654229971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1654228987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827114993 + 827114994.

It is an arithmetic number, because the mean of its divisors is an integer number (827114994).

Almost surely, 2^1654229987 is an apocalyptic number.

1654229987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654229987 is an equidigital number, since it uses as much as digits as its factorization.

1654229987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 53.

The square root of 1654229987 is about 40672.2262360938. The cubic root of 1654229987 is about 1182.6746727832.

The spelling of 1654229987 in words is "one billion, six hundred fifty-four million, two hundred twenty-nine thousand, nine hundred eighty-seven".