1642763148 has 72 divisors (see below), whose sum is σ = 4263024528. Its totient is φ = 491781888.

The previous prime is 1642763147. The next prime is 1642763153. The reversal of 1642763148 is 8413672461.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1642763147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64090 + ... + 85982.

It is an arithmetic number, because the mean of its divisors is an integer number (59208674).

Almost surely, 2^1642763148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642763148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2131512264).

1642763148 is an abundant number, since it is smaller than the sum of its proper divisors (2620261380).

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

1642763148 is a wasteful number, since it uses less digits than its factorization.

1642763148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21963 (or 21948 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 1642763148 is about 40531.0146431100. The cubic root of 1642763148 is about 1179.9356347157.

The spelling of 1642763148 in words is "one billion, six hundred forty-two million, seven hundred sixty-three thousand, one hundred forty-eight".