1988229297 has 16 divisors (see below), whose sum is σ = 2708858880. Its totient is φ = 1296574032.

The previous prime is 1988229283. The next prime is 1988229307. The reversal of 1988229297 is 7929228891.

1988229297 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1988229297 - 2⁴ = 1988229281 is a prime.

It is a super-2 number, since 2×1988229297² = 7906111474898228418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1988229247) 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, 415404 + ... + 420162.

It is an arithmetic number, because the mean of its divisors is an integer number (169303680).

Almost surely, 2^1988229297 is an apocalyptic number.

It is an amenable number.

1988229297 is a deficient number, since it is larger than the sum of its proper divisors (720629583).

1988229297 is a wasteful number, since it uses less digits than its factorization.

1988229297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772.

The product of its digits is 2612736, while the sum is 57.

The square root of 1988229297 is about 44589.5648891083. The cubic root of 1988229297 is about 1257.4444923043. Note that the first 4 decimals are identical.

The spelling of 1988229297 in words is "one billion, nine hundred eighty-eight million, two hundred twenty-nine thousand, two hundred ninety-seven".