1029159940 has 48 divisors (see below), whose sum is σ = 2337092352. Its totient is φ = 379198976.

The previous prime is 1029159931. The next prime is 1029159949. The reversal of 1029159940 is 499519201.

It is an interprime number because it is at equal distance from previous prime (1029159931) and next prime (1029159949).

It is a junction number, because it is equal to n+sod(n) for n = 1029159893 and 1029159902.

It is not an unprimeable number, because it can be changed into a prime (1029159949) 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, 16222 + ... + 48181.

It is an arithmetic number, because the mean of its divisors is an integer number (48689424).

Almost surely, 2^1029159940 is an apocalyptic number.

1029159940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1029159940 is an abundant number, since it is smaller than the sum of its proper divisors (1307932412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1029159940 is a wasteful number, since it uses less digits than its factorization.

1029159940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64476 (or 64474 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 1029159940 is about 32080.5227513518. The cubic root of 1029159940 is about 1009.6270033979.

The spelling of 1029159940 in words is "one billion, twenty-nine million, one hundred fifty-nine thousand, nine hundred forty".