7390911640 has 64 divisors (see below), whose sum is σ = 19049405760. Its totient is φ = 2528133120.

The previous prime is 7390911629. The next prime is 7390911719. The reversal of 7390911640 is 461190937.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7390911593 and 7390911602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90760 + ... + 151720.

It is an arithmetic number, because the mean of its divisors is an integer number (297646965).

Almost surely, 2^7390911640 is an apocalyptic number.

7390911640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7390911640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9524702880).

7390911640 is an abundant number, since it is smaller than the sum of its proper divisors (11658494120).

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

7390911640 is a wasteful number, since it uses less digits than its factorization.

7390911640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61412 (or 61408 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 7390911640 is about 85970.4114216048. The cubic root of 7390911640 is about 1947.8970658477.

The spelling of 7390911640 in words is "seven billion, three hundred ninety million, nine hundred eleven thousand, six hundred forty".