1954077440 has 108 divisors (see below), whose sum is σ = 5360766096. Its totient is φ = 668534784.

The previous prime is 1954077413. The next prime is 1954077451. The reversal of 1954077440 is 447704591.

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, 4184087 + ... + 4184553.

Almost surely, 2^1954077440 is an apocalyptic number.

1954077440 is a gapful number since it is divisible by the number (10) 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 1954077440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2680383048).

1954077440 is an abundant number, since it is smaller than the sum of its proper divisors (3406688656).

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

1954077440 is an frugal number, since it uses more digits than its factorization.

1954077440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1954077440 is about 44204.9481393203. The cubic root of 1954077440 is about 1250.2031541809.

The spelling of 1954077440 in words is "one billion, nine hundred fifty-four million, seventy-seven thousand, four hundred forty".