1019620464 has 20 divisors (see below), whose sum is σ = 2634019656. Its totient is φ = 339873472.

The previous prime is 1019620463. The next prime is 1019620471. The reversal of 1019620464 is 4640269101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019620463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10620999 + ... + 10621094.

Almost surely, 2^1019620464 is an apocalyptic number.

It is an amenable number.

1019620464 is an abundant number, since it is smaller than the sum of its proper divisors (1614399192).

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

1019620464 is a wasteful number, since it uses less digits than its factorization.

1019620464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21242104 (or 21242098 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1019620464 is about 31931.4964259428. The cubic root of 1019620464 is about 1006.4978412749.

Adding to 1019620464 its reverse (4640269101), we get a palindrome (5659889565).

The spelling of 1019620464 in words is "one billion, nineteen million, six hundred twenty thousand, four hundred sixty-four".