1234958640 has 40 divisors (see below), whose sum is σ = 3828372528. Its totient is φ = 329322240.

The previous prime is 1234958611. The next prime is 1234958651. The reversal of 1234958640 is 468594321.

1234958640 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1234958592 and 1234958601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2572591 + ... + 2573070.

Almost surely, 2^1234958640 is an apocalyptic number.

1234958640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234958640 is an abundant number, since it is smaller than the sum of its proper divisors (2593413888).

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

1234958640 is a wasteful number, since it uses less digits than its factorization.

1234958640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145677 (or 5145671 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1234958640 is about 35141.9783165376. The cubic root of 1234958640 is about 1072.8791471963.

The spelling of 1234958640 in words is "one billion, two hundred thirty-four million, nine hundred fifty-eight thousand, six hundred forty".