1020291948 has 36 divisors (see below), whose sum is σ = 2777462688. Its totient is φ = 313935840.

The previous prime is 1020291919. The next prime is 1020291967. The reversal of 1020291948 is 8491920201.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1089588 + ... + 1090523.

Almost surely, 2^1020291948 is an apocalyptic number.

1020291948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1020291948 is an abundant number, since it is smaller than the sum of its proper divisors (1757170740).

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

1020291948 is a wasteful number, since it uses less digits than its factorization.

1020291948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180134 (or 2180129 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1020291948 is about 31942.0091415678. The cubic root of 1020291948 is about 1006.7187401002.

The spelling of 1020291948 in words is "one billion, twenty million, two hundred ninety-one thousand, nine hundred forty-eight".